Merge pull request #222 from docker/dependabot/npm_and_yarn/docker/actions-toolkit-0.28.0

chore(deps): Bump @docker/actions-toolkit from 0.27.0 to 0.28.0

.dockerignore

@@ -1,2 +1,12 @@
 /coverage
-/node_modules
+
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

.eslintignore

@@ -0,0 +1,3 @@
+/dist/**
+/coverage/**
+/node_modules/**

.eslintrc.json

@@ -1,11 +1,12 @@
 {
   "env": {
     "node": true,
-    "es2021": true,
+    "es6": true,
     "jest": true
   },
   "extends": [
     "eslint:recommended",
+    "plugin:@typescript-eslint/eslint-recommended",
     "plugin:@typescript-eslint/recommended",
     "plugin:jest/recommended",
     "plugin:prettier/recommended"

.gitattributes

@@ -1,2 +1,4 @@
+/.yarn/releases/** binary
+/.yarn/plugins/** binary
 /dist/** linguist-generated=true
 /lib/** linguist-generated=true

.github/CODEOWNERS

@@ -1 +0,0 @@
-*	@crazy-max

.github/CODE_OF_CONDUCT.md

@@ -0,0 +1,3 @@
+# Code of conduct
+
+- [Moby community guidelines](https://github.com/moby/moby/blob/master/CONTRIBUTING.md#moby-community-guidelines)

.github/ISSUE_TEMPLATE/bug.yml

@@ -0,0 +1,101 @@
+# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
+name: Bug Report
+description: Report a bug
+labels:
+  - status/triage
+
+body:
+  - type: markdown
+    attributes:
+      value: |
+        Thank you for taking the time to report a bug!
+        If this is a security issue please report it to the [Docker Security team](mailto:security@docker.com).
+
+  - type: checkboxes
+    attributes:
+      label: Contributing guidelines
+      description: >
+        Make sure you've read the contributing guidelines before proceeding.
+      options:
+        - label: I've read the [contributing guidelines](https://github.com/docker/bake-action/blob/master/.github/CONTRIBUTING.md) and wholeheartedly agree
+          required: true
+
+  - type: checkboxes
+    attributes:
+      label: "I've found a bug, and:"
+      description: |
+        Make sure that your request fulfills all of the following requirements.
+        If one requirement cannot be satisfied, explain in detail why.
+      options:
+        - label: The documentation does not mention anything about my problem
+        - label: There are no open or closed issues that are related to my problem
+
+  - type: textarea
+    attributes:
+      label: Description
+      description: >
+        Provide a brief description of the bug in 1-2 sentences.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Expected behaviour
+      description: >
+        Describe precisely what you'd expect to happen.
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Actual behaviour
+      description: >
+        Describe precisely what is actually happening.
+    validations:
+      required: true
+
+  - type: input
+    attributes:
+      label: Repository URL
+      description: >
+        Enter the URL of the repository where you are experiencing the
+        issue. If your repository is private, provide a link to a minimal
+        repository that reproduces the issue.
+
+  - type: input
+    attributes:
+      label: Workflow run URL
+      description: >
+        Enter the URL of the GitHub Action workflow run if public (e.g.
+        `https://github.com/<user>/<repo>/actions/runs/<id>`)
+
+  - type: textarea
+    attributes:
+      label: YAML workflow
+      description: |
+        Provide the YAML of the workflow that's causing the issue.
+        Make sure to remove any sensitive information.
+      render: yaml
+    validations:
+      required: true
+
+  - type: textarea
+    attributes:
+      label: Workflow logs
+      description: >
+        [Attach](https://docs.github.com/en/get-started/writing-on-github/working-with-advanced-formatting/attaching-files)
+        the [log file of your workflow run](https://docs.github.com/en/actions/managing-workflow-runs/using-workflow-run-logs#downloading-logs)
+        and make sure to remove any sensitive information.
+
+  - type: textarea
+    attributes:
+      label: BuildKit logs
+      description: >
+        If applicable, provide the [BuildKit container logs](https://docs.docker.com/build/ci/github-actions/configure-builder/#buildkit-container-logs)
+      render: text
+
+  - type: textarea
+    attributes:
+      label: Additional info
+      description: |
+        Provide any additional information that could be useful.

.github/ISSUE_TEMPLATE/bug_report.md

@@ -1,34 +0,0 @@
----
-name: Bug report
-about: Create a report to help us improve
----
-
-### Behaviour
-
-#### Steps to reproduce this issue
-
-1.
-2.
-3.
-
-#### Expected behaviour
-
-> Tell us what should happen
-
-#### Actual behaviour
-
-> Tell us what happens instead
-
-### Configuration
-
-* Repository URL (if public): 
-* Build URL (if public): 
-
-```yml
-# paste your YAML workflow file here and remove sensitive data
-```
-
-### Logs
-
-> Download the [log file of your build](https://docs.github.com/en/actions/managing-workflow-runs/using-workflow-run-logs#downloading-logs)
-> and [attach it](https://docs.github.com/en/github/managing-your-work-on-github/file-attachments-on-issues-and-pull-requests) to this issue.

.github/ISSUE_TEMPLATE/config.yml

@@ -0,0 +1,9 @@
+# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/configuring-issue-templates-for-your-repository#configuring-the-template-chooser
+blank_issues_enabled: true
+contact_links:
+  - name: Questions and Discussions
+    url: https://github.com/docker/bake-action/discussions/new
+    about: Use Github Discussions to ask questions and/or open discussion topics.
+  - name: Documentation
+    url: https://docs.docker.com/build/ci/github-actions/
+    about: Read the documentation.

.github/ISSUE_TEMPLATE/feature.yml

@@ -0,0 +1,15 @@
+# https://docs.github.com/en/communities/using-templates-to-encourage-useful-issues-and-pull-requests/syntax-for-githubs-form-schema
+name: Feature request
+description: Missing functionality? Come tell us about it!
+labels:
+  - kind/enhancement
+  - status/triage
+
+body:
+  - type: textarea
+    id: description
+    attributes:
+      label: Description
+      description: What is the feature you want to see?
+    validations:
+      required: true

.github/SECURITY.md

@@ -0,0 +1,12 @@
+# Reporting security issues
+
+The project maintainers take security seriously. If you discover a security
+issue, please bring it to their attention right away!
+
+**Please _DO NOT_ file a public issue**, instead send your report privately to
+[security@docker.com](mailto:security@docker.com).
+
+Security reports are greatly appreciated, and we will publicly thank you for it.
+We also like to send gifts—if you'd like Docker swag, make sure to let
+us know. We currently do not offer a paid security bounty program, but are not
+ruling it out in the future.

.github/SUPPORT.md

@@ -1,31 +0,0 @@
-# Support [![](https://isitmaintained.com/badge/resolution/docker/bake-action.svg)](https://isitmaintained.com/project/docker/bake-action)
-
-First, [be a good guy](https://github.com/kossnocorp/etiquette/blob/master/README.md).
-
-## Reporting an issue
-
-Please do a search in [open issues](https://github.com/docker/bake-action/issues?utf8=%E2%9C%93&q=) to see if the issue or feature request has already been filed.
-
-If you find your issue already exists, make relevant comments and add your [reaction](https://github.com/blog/2119-add-reactions-to-pull-requests-issues-and-comments). Use a reaction in place of a "+1" comment.
-
-:+1: - upvote
-
-:-1: - downvote
-
-If you cannot find an existing issue that describes your bug or feature, submit an issue using the guidelines below.
-
-## Writing good bug reports and feature requests
-
-File a single issue per problem and feature request.
-
-* Do not enumerate multiple bugs or feature requests in the same issue.
-* Do not add your issue as a comment to an existing issue unless it's for the identical input. Many issues look similar, but have different causes.
-
-The more information you can provide, the more likely someone will be successful reproducing the issue and finding a fix.
-
-You are now ready to [create a new issue](https://github.com/docker/bake-action/issues/new/choose)!
-
-## Closure policy
-
-* Issues that don't have the information requested above (when applicable) will be closed immediately and the poster directed to the support guidelines.
-* Issues that go a week without a response from original poster are subject to closure at our discretion.

.github/dependabot.yml

@@ -11,6 +11,7 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
+    versioning-strategy: "increase"
     allow:
       - dependency-type: "production"
     labels:

.github/workflows/ci-subaction.yml

@@ -0,0 +1,61 @@
+name: ci-subaction
+
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: '0 10 * * *'
+  push:
+    branches:
+      - 'master'
+      - 'releases/v*'
+    tags:
+      - 'v*'
+    paths:
+      - '.github/workflows/ci-subaction.yml'
+      - 'subaction/**'
+      - 'test/**'
+  pull_request:
+    paths:
+      - '.github/workflows/ci-subaction.yml'
+      - 'subaction/**'
+      - 'test/**'
+
+jobs:
+  list-targets-group:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Matrix gen
+        id: gen
+        uses: ./subaction/list-targets
+        with:
+          workdir: ./test/group
+      -
+        name: Show matrix
+        run: |
+          echo matrix=${{ steps.gen.outputs.matrix }}
+
+  list-targets-group-matrix:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Matrix gen
+        id: gen
+        uses: ./subaction/list-targets
+        with:
+          workdir: ./test/group-matrix
+          target: validate
+      -
+        name: Show matrix
+        run: |
+          echo matrix=${{ steps.gen.outputs.matrix }}

.github/workflows/ci.yml

@@ -1,5 +1,9 @@
 name: ci
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   workflow_dispatch:
     inputs:
@@ -19,10 +23,16 @@ on:
       - 'releases/v*'
     tags:
       - 'v*'
+    paths-ignore:
+      - '.github/workflows/ci-subaction.yml'
+      - 'subaction/**'
   pull_request:
+    paths-ignore:
+      - '.github/workflows/ci-subaction.yml'
+      - 'subaction/**'
 
 env:
-  BUILDX_VERSION: v0.18.0
+  BUILDX_VERSION: latest
   BUILDKIT_IMAGE: moby/buildkit:buildx-stable-1
 
 jobs:
@@ -42,14 +52,14 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up QEMU
-        uses: docker/setup-qemu-action@v2
+        uses: docker/setup-qemu-action@v3
       -
         name: Set up Docker Buildx
         id: buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         with:
           version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
           driver-opts: |
@@ -71,13 +81,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
-          driver: docker
+        uses: actions/checkout@v4
       -
         name: Build
         continue-on-error: true
@@ -93,13 +97,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
-          driver: docker
+        uses: actions/checkout@v4
       -
         name: Stop docker
         run: |
@@ -126,14 +124,18 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
-        name: Uninstall moby cli
+        name: Uninstall docker cli
         run: |
-          sudo apt-get purge -y moby-cli moby-buildx
+          if dpkg -s "docker-ce" >/dev/null 2>&1; then
+            sudo dpkg -r --force-depends docker-ce-cli docker-buildx-plugin
+          else
+            sudo apt-get purge -y moby-cli moby-buildx
+          fi
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         with:
           version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
           driver-opts: |
@@ -150,13 +152,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
-          driver: docker
+        uses: actions/checkout@v4
       -
         name: Build
         uses: ./
@@ -178,10 +174,10 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         with:
           version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
           driver-opts: |
@@ -219,10 +215,10 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         with:
           version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
           driver-opts: |
@@ -273,13 +269,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
-      -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v3
-        with:
-          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
-          driver: docker
+        uses: actions/checkout@v4
       -
         name: Build
         uses: ./
@@ -300,10 +290,10 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
         with:
           version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
           driver-opts: |
@@ -319,30 +309,268 @@ jobs:
             t1.tags=localhost:5000/name/app:t1
             t2.tags=localhost:5000/name/app:t2
 
-  error-buildx-latest:
+  docker-config-malformed:
     runs-on: ubuntu-latest
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
-        name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
-        with:
-          version: v0.20.0
+        name: Set malformed docker config
+        run: |
+          mkdir -p ~/.docker
+          echo 'foo_bar' >> ~/.docker/config.json
       -
         name: Build
-        id: bake
-        continue-on-error: true
         uses: ./
         with:
           files: |
             ./test/config.hcl
+
+  proxy-docker-config:
+    runs-on: ubuntu-latest
+    services:
+      squid-proxy:
+        image: ubuntu/squid:latest
+        ports:
+          - 3128:3128
+    steps:
       -
-        name: Check
+        name: Check proxy
         run: |
-          echo "${{ toJson(steps.bake) }}"
-          if [ "${{ steps.bake.outcome }}" != "failure" ] || [ "${{ steps.bake.conclusion }}" != "success" ]; then
-            echo "::error::Should have failed"
-            exit 1
-          fi
+          netstat -aptn
+          curl --retry 5 --retry-all-errors --retry-delay 0 --connect-timeout 5 --proxy http://127.0.0.1:3128 -v --insecure --head https://www.google.com
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set proxy config
+        run: |
+          mkdir -p ~/.docker
+          echo '{"proxies":{"default":{"httpProxy":"http://127.0.0.1:3128","httpsProxy":"http://127.0.0.1:3128"}}}' > ~/.docker/config.json
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            image=${{ inputs.buildkit-image || env.BUILDKIT_IMAGE }}
+            network=host
+          buildkitd-flags: --debug
+      -
+        name: Build
+        uses: ./
+        with:
+          files: |
+            ./test/config.hcl
+          targets: app-proxy
+
+  proxy-buildkitd:
+    runs-on: ubuntu-latest
+    services:
+      squid-proxy:
+        image: ubuntu/squid:latest
+        ports:
+          - 3128:3128
+    steps:
+      -
+        name: Check proxy
+        run: |
+          netstat -aptn
+          curl --retry 5 --retry-all-errors --retry-delay 0 --connect-timeout 5 --proxy http://127.0.0.1:3128 -v --insecure --head https://www.google.com
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            image=${{ inputs.buildkit-image || env.BUILDKIT_IMAGE }}
+            network=host
+            env.http_proxy=http://127.0.0.1:3128
+            env.https_proxy=http://127.0.0.1:3128
+          buildkitd-flags: --debug
+      -
+        name: Build
+        uses: ./
+        with:
+          files: |
+            ./test/config.hcl
+
+  git-context:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            image=${{ inputs.buildkit-image || env.BUILDKIT_IMAGE }}
+      -
+        name: Build
+        uses: ./
+        with:
+          source: "{{defaultContext}}"
+
+  git-context-and-local:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            image=${{ inputs.buildkit-image || env.BUILDKIT_IMAGE }}
+      -
+        name: Docker meta
+        id: meta
+        uses: docker/metadata-action@v5
+      -
+        name: Build
+        uses: ./
+        with:
+          source: "{{defaultContext}}"
+          files: |
+            cwd://${{ steps.meta.outputs.bake-file }}
+
+  multi-output:
+    runs-on: ubuntu-latest
+    services:
+      registry:
+        image: registry:2
+        ports:
+          - 5000:5000
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            network=host
+      -
+        name: Build and push
+        uses: ./
+        with:
+          workdir: ./test/go
+          set: |
+            *.output=type=image,name=localhost:5000/name/app:latest,push=true
+            *.output=type=docker,name=app:local
+            *.output=type=oci,dest=/tmp/oci.tar
+      -
+        name: Check registry
+        run: |
+          docker buildx imagetools inspect localhost:5000/name/app:latest --format '{{json .}}'
+      -
+        name: Check docker
+        run: |
+          docker image inspect app:local
+      -
+        name: Check oci
+        run: |
+          set -ex
+          mkdir -p /tmp/oci-out
+          tar xf /tmp/oci.tar -C /tmp/oci-out
+          tree -nh /tmp/oci-out
+
+  load-and-push:
+    runs-on: ubuntu-latest
+    services:
+      registry:
+        image: registry:2
+        ports:
+          - 5000:5000
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            network=host
+      -
+        name: Build and push
+        uses: ./
+        with:
+          workdir: ./test/go
+          targets: image
+          load: true
+          push: true
+          set: |
+            *.tags=localhost:5000/name/app:latest
+      -
+        name: Check registry
+        run: |
+          docker buildx imagetools inspect localhost:5000/name/app:latest --format '{{json .}}'
+      -
+        name: Check docker
+        run: |
+          docker image inspect localhost:5000/name/app:latest
+
+  disable-summary:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            image=${{ inputs.buildkit-image || env.BUILDKIT_IMAGE }}
+      -
+        name: Build
+        uses: ./
+        with:
+          files: |
+            ./test/config.hcl
+          targets: app
+        env:
+          DOCKER_BUILD_NO_SUMMARY: true
+
+  export-retention-days:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        days:
+          - 2
+          - 0
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+        with:
+          version: ${{ inputs.buildx-version || env.BUILDX_VERSION }}
+          driver-opts: |
+            image=${{ inputs.buildkit-image || env.BUILDKIT_IMAGE }}
+      -
+        name: Build
+        uses: ./
+        with:
+          files: |
+            ./test/config.hcl
+          targets: app
+        env:
+          DOCKER_BUILD_EXPORT_RETENTION_DAYS: ${{ matrix.days }}

.github/workflows/test.yml

@@ -1,11 +1,21 @@
 name: test
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches:
       - 'master'
       - 'releases/v*'
+    paths-ignore:
+      - '.github/workflows/ci-subaction.yml'
+      - 'subaction/**'
   pull_request:
+    paths-ignore:
+      - '.github/workflows/ci-subaction.yml'
+      - 'subaction/**'
 
 jobs:
   test:
@@ -13,14 +23,15 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Test
-        uses: docker/bake-action@v3
+        uses: docker/bake-action@v5
         with:
           targets: test
       -
         name: Upload coverage
-        uses: codecov/codecov-action@v3
+        uses: codecov/codecov-action@v4
         with:
           file: ./coverage/clover.xml
+          token: ${{ secrets.CODECOV_TOKEN }}

.github/workflows/validate.yml

@@ -1,5 +1,9 @@
 name: validate
 
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: true
+
 on:
   push:
     branches:
@@ -11,16 +15,17 @@ jobs:
   prepare:
     runs-on: ubuntu-latest
     outputs:
-      targets: ${{ steps.targets.outputs.matrix }}
+      targets: ${{ steps.generate.outputs.targets }}
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
-        name: Targets matrix
-        id: targets
-        run: |
-          echo "matrix=$(docker buildx bake validate --print | jq -cr '.group.validate.targets')" >> $GITHUB_OUTPUT
+        name: List targets
+        id: generate
+        uses: ./subaction/list-targets
+        with:
+          target: validate
 
   validate:
     runs-on: ubuntu-latest
@@ -33,9 +38,9 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Validate
-        uses: docker/bake-action@v3
+        uses: docker/bake-action@v5
         with:
           targets: ${{ matrix.target }}

.gitignore

@@ -1,12 +1,5 @@
-/.dev
-node_modules
-lib
+# https://raw.githubusercontent.com/github/gitignore/main/Node.gitignore
 
-# Jetbrains
-/.idea
-/*.iml
-
-# Rest of the file pulled from https://github.com/github/gitignore/blob/master/Node.gitignore
 # Logs
 logs
 *.log
@@ -14,6 +7,7 @@ npm-debug.log*
 yarn-debug.log*
 yarn-error.log*
 lerna-debug.log*
+.pnpm-debug.log*
 
 # Diagnostic reports (https://nodejs.org/api/report.html)
 report.[0-9]*.[0-9]*.[0-9]*.[0-9]*.json
@@ -24,34 +18,14 @@ pids
 *.seed
 *.pid.lock
 
-# Directory for instrumented libs generated by jscoverage/JSCover
-lib-cov
-
 # Coverage directory used by tools like istanbul
 coverage
 *.lcov
 
-# nyc test coverage
-.nyc_output
-
-# Grunt intermediate storage (https://gruntjs.com/creating-plugins#storing-task-files)
-.grunt
-
-# Bower dependency directory (https://bower.io/)
-bower_components
-
-# node-waf configuration
-.lock-wscript
-
-# Compiled binary addons (https://nodejs.org/api/addons.html)
-build/Release
-
 # Dependency directories
+node_modules/
 jspm_packages/
 
-# TypeScript v1 declaration files
-typings/
-
 # TypeScript cache
 *.tsbuildinfo
 
@@ -61,36 +35,19 @@ typings/
 # Optional eslint cache
 .eslintcache
 
-# Optional REPL history
-.node_repl_history
-
-# Output of 'npm pack'
-*.tgz
-
 # Yarn Integrity file
 .yarn-integrity
 
-# dotenv environment variables file
+# dotenv environment variable files
 .env
-.env.test
+.env.development.local
+.env.test.local
+.env.production.local
+.env.local
 
-# parcel-bundler cache (https://parceljs.org/)
-.cache
-
-# next.js build output
-.next
-
-# nuxt.js build output
-.nuxt
-
-# vuepress build output
-.vuepress/dist
-
-# Serverless directories
-.serverless/
-
-# FuseBox cache
-.fusebox/
-
-# DynamoDB Local files
-.dynamodb/
+# yarn v2
+.yarn/cache
+.yarn/unplugged
+.yarn/build-state.yml
+.yarn/install-state.gz
+.pnp.*

.prettierignore

@@ -0,0 +1,6 @@
+# Dependency directories
+node_modules/
+jspm_packages/
+
+# yarn v2
+.yarn/

.yarnrc.yml

@@ -0,0 +1,13 @@
+logFilters:
+  - code: YN0013
+    level: discard
+  - code: YN0019
+    level: discard
+  - code: YN0076
+    level: discard
+
+nodeLinker: node-modules
+
+plugins:
+  - path: .yarn/plugins/@yarnpkg/plugin-interactive-tools.cjs
+    spec: "@yarnpkg/plugin-interactive-tools"

README.md

@@ -4,13 +4,6 @@
 [![Test workflow](https://img.shields.io/github/actions/workflow/status/docker/bake-action/test.yml?branch=master&label=test&logo=github&style=flat-square)](https://github.com/docker/bake-action/actions?workflow=test)
 [![Codecov](https://img.shields.io/codecov/c/github/docker/bake-action?logo=codecov&style=flat-square)](https://codecov.io/gh/docker/bake-action)
 
-## :test_tube: Experimental
-
-This repository is considered **EXPERIMENTAL** and under active development
-until further notice. It is subject to non-backward compatible changes or
-removal in any future version, so you should [pin to a specific tag/commit](https://docs.github.com/en/actions/creating-actions/about-actions#using-tags-for-release-management)
-of this action in your workflow (i.e `docker/bake-action@v1.1.3`).
-
 ## About
 
 GitHub Action to use Docker [Buildx Bake](https://docs.docker.com/build/customize/bake/)
@@ -21,13 +14,24 @@ as a high-level build command.
 ___
 
 * [Usage](#usage)
+  * [Path context](#path-context)
+  * [Git context](#git-context)
 * [Customizing](#customizing)
   * [inputs](#inputs)
   * [outputs](#outputs)
+  * [environment variables](#environment-variables)
+* [Subactions](#subactions)
+  * [`list-targets`](#list-targets)
 * [Contributing](#contributing)
 
 ## Usage
 
+### Path context
+
+By default, this action will use the local bake definition (`source: .`), so
+you need to use the [`actions/checkout`](https://github.com/actions/checkout/)
+action to check out the repository.
+
 ```yaml
 name: ci
 
@@ -42,28 +46,103 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v3
+        uses: actions/checkout@v4
       -
         name: Set up Docker Buildx
-        uses: docker/setup-buildx-action@v2
+        uses: docker/setup-buildx-action@v3
       -
         name: Login to DockerHub
-        uses: docker/login-action@v2
+        uses: docker/login-action@v3
         with:
           username: ${{ secrets.DOCKERHUB_USERNAME }}
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       -
         name: Build and push
-        uses: docker/bake-action@v3
+        uses: docker/bake-action@v5
         with:
           push: true
 ```
 
+### Git context
+
+Git context can be provided using the [`source` input](#inputs). This means
+that you don't need to use the [`actions/checkout`](https://github.com/actions/checkout/)
+action to check out the repository as [BuildKit](https://docs.docker.com/build/buildkit/)
+will do this directly.
+
+```yaml
+name: ci
+
+on:
+  push:
+    branches:
+      - 'master'
+
+jobs:
+  bake:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+      -
+        name: Login to DockerHub
+        uses: docker/login-action@v3
+        with:
+          username: ${{ secrets.DOCKERHUB_USERNAME }}
+          password: ${{ secrets.DOCKERHUB_TOKEN }}
+      -
+        name: Build and push
+        uses: docker/bake-action@v5
+        with:
+          source: "${{ github.server_url }}/${{ github.repository }}.git#${{ github.ref }}"
+          push: true
+```
+
+Be careful because **any file mutation in the steps that precede the build step
+will be ignored, including processing of the `.dockerignore` file** since
+the context is based on the Git reference. However, you can use the
+[Path context](#path-context) alongside the [`actions/checkout`](https://github.com/actions/checkout/)
+action to remove this restriction.
+
+Default Git context can also be provided using the [Handlebars template](https://handlebarsjs.com/guide/)
+expression `{{defaultContext}}`. Here we can use it to provide a subdirectory
+to the default Git context:
+
+```yaml
+      -
+        name: Build and push
+        uses: docker/bake-action@v5
+        with:
+          source: "{{defaultContext}}:mysubdir"
+          push: true
+```
+
+Building from the current repository automatically uses the `GITHUB_TOKEN`
+secret that GitHub [automatically creates for workflows](https://docs.github.com/en/actions/security-guides/automatic-token-authentication),
+so you don't need to pass that manually. If you want to authenticate against
+another private repository for remote definitions, you can set the
+[`BUILDX_BAKE_GIT_AUTH_TOKEN` environment variable](https://docs.docker.com/build/building/variables/#buildx_bake_git_auth_token).
+
+> [!NOTE]
+> Supported since Buildx 0.14.0
+
+```yaml
+      -
+        name: Build and push
+        uses: docker/bake-action@v5
+        with:
+          source: "${{ github.server_url }}/${{ github.repository }}.git#${{ github.ref }}"
+          push: true
+        env:
+          BUILDX_BAKE_GIT_AUTH_TOKEN: ${{ secrets.MYTOKEN }}
+```
+
 ## Customizing
 
 ### inputs
 
-Following inputs can be used as `step.with` keys
+The following inputs can be used as `step.with` keys
 
 > `List` type is a newline-delimited string
 > ```yaml
@@ -80,29 +159,110 @@ Following inputs can be used as `step.with` keys
 > targets: default,release
 > ```
 
-| Name         | Type        | Description                                                                                                                                 |
-|--------------|-------------|---------------------------------------------------------------------------------------------------------------------------------------------|
-| `builder`    | String      | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action)                                                 |
-| `files`      | List/CSV    | List of [bake definition files](https://docs.docker.com/build/customize/bake/file-definition/)                                              |
-| `workdir`    | String      | Working directory of execution                                                                                                              |
-| `targets`    | List/CSV    | List of bake targets (`default` target used if empty)                                                                                       |
-| `no-cache`   | Bool        | Do not use cache when building the image (default `false`)                                                                                  |
-| `pull`       | Bool        | Always attempt to pull a newer version of the image (default `false`)                                                                       |
-| `load`       | Bool        | Load is a shorthand for `--set=*.output=type=docker` (default `false`)                                                                      |
-| `provenance` | Bool/String | [Provenance](https://docs.docker.com/build/attestations/slsa-provenance/) is a shorthand for `--set=*.attest=type=provenance`                    |
-| `push`       | Bool        | Push is a shorthand for `--set=*.output=type=registry` (default `false`)                                                                    |
-| `sbom`       | Bool/String | [SBOM](https://docs.docker.com/build/attestations/sbom/) is a shorthand for `--set=*.attest=type=sbom`                                      |
-| `set`        | List        | List of [targets values to override](https://docs.docker.com/engine/reference/commandline/buildx_bake/#set) (eg: `targetpattern.key=value`) |
-| `source`     | String      | [Remote bake definition](https://docs.docker.com/build/customize/bake/file-definition/#remote-definition) to build from                     |
+| Name           | Type        | Description                                                                                                                                                        |
+|----------------|-------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `builder`      | String      | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action)                                                                        |
+| `source`       | String      | Context to build from. Can be either local (`.`) or a [remote bake definition](https://docs.docker.com/build/customize/bake/file-definition/#remote-definition)    |
+| `files`        | List/CSV    | List of [bake definition files](https://docs.docker.com/build/customize/bake/file-definition/)                                                                     |
+| `workdir`      | String      | Working directory of execution                                                                                                                                     |
+| `targets`      | List/CSV    | List of bake targets (`default` target used if empty)                                                                                                              |
+| `no-cache`     | Bool        | Do not use cache when building the image (default `false`)                                                                                                         |
+| `pull`         | Bool        | Always attempt to pull a newer version of the image (default `false`)                                                                                              |
+| `load`         | Bool        | Load is a shorthand for `--set=*.output=type=docker` (default `false`)                                                                                             |
+| `provenance`   | Bool/String | [Provenance](https://docs.docker.com/build/attestations/slsa-provenance/) is a shorthand for `--set=*.attest=type=provenance`                                      |
+| `push`         | Bool        | Push is a shorthand for `--set=*.output=type=registry` (default `false`)                                                                                           |
+| `sbom`         | Bool/String | [SBOM](https://docs.docker.com/build/attestations/sbom/) is a shorthand for `--set=*.attest=type=sbom`                                                             |
+| `set`          | List        | List of [targets values to override](https://docs.docker.com/engine/reference/commandline/buildx_bake/#set) (eg: `targetpattern.key=value`)                        |
+| `github-token` | String      | API token used to authenticate to a Git repository for [remote definitions](https://docs.docker.com/build/bake/remote-definition/) (default `${{ github.token }}`) |
 
 ### outputs
 
-Following outputs are available
+The following outputs are available
 
 | Name       | Type | Description           |
 |------------|------|-----------------------|
 | `metadata` | JSON | Build result metadata |
 
+## Subactions
+
+### `list-targets`
+
+This subaction generates a list of Bake targets that can be used in a [GitHub matrix](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idstrategymatrix),
+so you can distribute your builds across multiple runners.
+
+```hcl
+# docker-bake.hcl
+group "validate" {
+  targets = ["lint", "doctoc"]
+}
+
+target "lint" {
+  target = "lint"
+}
+
+target "doctoc" {
+  target = "doctoc"
+}
+```
+
+```yaml
+jobs:
+  prepare:
+    runs-on: ubuntu-latest
+    outputs:
+      targets: ${{ steps.generate.outputs.targets }}
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: List targets
+        id: generate
+        uses: docker/bake-action/subaction/list-targets@v4
+        with:
+          target: validate
+
+  validate:
+    runs-on: ubuntu-latest
+    needs:
+      - prepare
+    strategy:
+      fail-fast: false
+      matrix:
+        target: ${{ fromJson(needs.prepare.outputs.targets) }}
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v4
+      -
+        name: Validate
+        uses: docker/bake-action@v5
+        with:
+          targets: ${{ matrix.target }}
+```
+#### inputs
+
+| Name         | Type        | Description                                                                                                                                 |
+|--------------|-------------|---------------------------------------------------------------------------------------------------------------------------------------------|
+| `workdir`    | String      | Working directory to use (defaults to `.`)                                                                                                  |
+| `files`      | List/CSV    | List of [bake definition files](https://docs.docker.com/build/customize/bake/file-definition/)                                              |
+| `target`     | String      | The target to use within the bake file                                                                                                      |
+
+#### outputs
+
+The following outputs are available
+
+| Name       | Type     | Description                |
+|------------|----------|----------------------------|
+| `targets`  | List/CSV | List of extracted targest  |
+
+### environment variables
+
+| Name                                 | Type   | Description                                                                                                                                                                                                                                                        |
+|--------------------------------------|--------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|
+| `DOCKER_BUILD_NO_SUMMARY`            | Bool   | If `true`, [build summary](https://docs.docker.com/build/ci/github-actions/build-summary/) generation is disabled                                                                                                                                                  |
+| `DOCKER_BUILD_EXPORT_RETENTION_DAYS` | Number | Duration after which build export artifact will expire in days. Defaults to repository/org [retention settings](https://docs.github.com/en/actions/learn-github-actions/usage-limits-billing-and-administration#artifact-and-log-retention-policy) if unset or `0` |
+
 ## Contributing
 
 Want to contribute? Awesome! You can find information about contributing to

__tests__/context.test.ts

@@ -1,6 +1,7 @@
 import {beforeEach, describe, expect, jest, test} from '@jest/globals';
 import * as fs from 'fs';
 import * as path from 'path';
+
 import {Bake} from '@docker/actions-toolkit/lib/buildx/bake';
 import {Builder} from '@docker/actions-toolkit/lib/buildx/builder';
 import {Buildx} from '@docker/actions-toolkit/lib/buildx/buildx';
@@ -8,8 +9,9 @@ import {Context} from '@docker/actions-toolkit/lib/context';
 import {Docker} from '@docker/actions-toolkit/lib/docker/docker';
 import {GitHub} from '@docker/actions-toolkit/lib/github';
 import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
-import {BakeDefinition} from '@docker/actions-toolkit/lib/types/bake';
-import {BuilderInfo} from '@docker/actions-toolkit/lib/types/builder';
+
+import {BakeDefinition} from '@docker/actions-toolkit/lib/types/buildx/bake';
+import {BuilderInfo} from '@docker/actions-toolkit/lib/types/buildx/builder';
 import {GitHubRepo} from '@docker/actions-toolkit/lib/types/github';
 
 import * as context from '../src/context';
@@ -37,6 +39,11 @@ jest.spyOn(Docker, 'isAvailable').mockImplementation(async (): Promise<boolean>
   return true;
 });
 
+const metadataJson = path.join(tmpDir, 'metadata.json');
+jest.spyOn(Bake.prototype, 'getMetadataFilePath').mockImplementation((): string => {
+  return metadataJson;
+});
+
 jest.spyOn(Builder.prototype, 'inspect').mockImplementation(async (): Promise<BuilderInfo> => {
   return {
     name: 'builder2',
@@ -56,7 +63,7 @@ jest.spyOn(Builder.prototype, 'inspect').mockImplementation(async (): Promise<Bu
   };
 });
 
-jest.spyOn(Bake.prototype, 'parseDefinitions').mockImplementation(async (): Promise<BakeDefinition> => {
+jest.spyOn(Bake.prototype, 'getDefinition').mockImplementation(async (): Promise<BakeDefinition> => {
   return JSON.parse(`{
     "group": {
       "default": {
@@ -150,7 +157,7 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file')
+        '--metadata-file', metadataJson
       ]
     ],
     [
@@ -165,7 +172,7 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
+        '--metadata-file', metadataJson,
         'webapp', 'validate'
       ]
     ],
@@ -183,7 +190,7 @@ describe('getArgs', () => {
         'bake',
         '--set', '*.cache-from=type=gha',
         '--set', '*.cache-to=type=gha',
-        '--metadata-file', path.join(tmpDir, 'metadata-file')
+        '--metadata-file', metadataJson
       ]
     ],
     [
@@ -197,8 +204,8 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
-        "--provenance", `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789`,
+        '--metadata-file', metadataJson,
+        "--provenance", `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789/attempts/1`,
       ]
     ],
     [
@@ -213,8 +220,8 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
-        "--provenance", `builder-id=https://github.com/docker/build-push-action/actions/runs/123456789`
+        '--metadata-file', metadataJson,
+        "--provenance", `builder-id=https://github.com/docker/build-push-action/actions/runs/123456789/attempts/1`
       ]
     ],
     [
@@ -229,8 +236,8 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
-        "--provenance", `mode=max,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789`
+        '--metadata-file', metadataJson,
+        "--provenance", `mode=max,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789/attempts/1`
       ]
     ],
     [
@@ -245,7 +252,7 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
+        '--metadata-file', metadataJson,
         "--provenance", 'false'
       ]
     ],
@@ -261,7 +268,7 @@ describe('getArgs', () => {
       ]),
       [
         'bake',
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
+        '--metadata-file', metadataJson,
         "--provenance", 'builder-id=foo'
       ]
     ],
@@ -280,8 +287,8 @@ describe('getArgs', () => {
         'bake',
         '--set', '*.platform=linux/amd64,linux/ppc64le,linux/s390x',
         '--set', `*.output=type=image,"name=moby/buildkit:v0.11.0,moby/buildkit:latest",push=true`,
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
-        '--provenance', `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789`,
+        '--metadata-file', metadataJson,
+        '--provenance', `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789/attempts/1`,
         'image-all'
       ]
     ],
@@ -299,11 +306,30 @@ describe('getArgs', () => {
       [
         'bake',
         '--set', `*.labels.foo=bar=#baz`,
-        '--metadata-file', path.join(tmpDir, 'metadata-file'),
-        '--provenance', `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789`,
+        '--metadata-file', metadataJson,
+        '--provenance', `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789/attempts/1`,
         'image-all'
       ]
     ],
+    [
+      11,
+      '0.10.0',
+      new Map<string, string>([
+        ['source', '{{defaultContext}}'],
+        ['load', 'false'],
+        ['no-cache', 'false'],
+        ['push', 'false'],
+        ['pull', 'false'],
+        ['files', './foo.hcl'],
+      ]),
+      [
+        'bake',
+        'https://github.com/docker/build-push-action.git#refs/heads/master',
+        '--file', './foo.hcl',
+        '--metadata-file', metadataJson,
+        '--provenance', `mode=min,inline-only=true,builder-id=https://github.com/docker/build-push-action/actions/runs/123456789/attempts/1`,
+      ]
+    ],
   ])(
     '[%d] given %p with %p as inputs, returns %p',
     async (num: number, buildxVersion: string, inputs: Map<string, string>, expected: Array<string>) => {
@@ -315,7 +341,23 @@ describe('getArgs', () => {
         return buildxVersion;
       });
       const inp = await context.getInputs();
-      const res = await context.getArgs(inp, toolkit);
+      const definition = await toolkit.buildxBake.getDefinition(
+        {
+          files: inp.files,
+          load: inp.load,
+          noCache: inp['no-cache'],
+          overrides: inp.set,
+          provenance: inp.provenance,
+          push: inp.push,
+          sbom: inp.sbom,
+          source: inp.source,
+          targets: inp.targets
+        },
+        {
+          cwd: inp.workdir
+        }
+      );
+      const res = await context.getArgs(inp, definition, toolkit);
       expect(res).toEqual(expected);
     }
   );

action.yml

@@ -10,9 +10,12 @@ inputs:
   builder:
     description: "Builder instance"
     required: false
+  source:
+    description: "Context to build from. Can be either local or a remote bake definition"
+    required: false
   files:
     description: "List of bake definition files"
-    required: true
+    required: false
   workdir:
     description: "Working directory of bake execution"
     required: false
@@ -45,8 +48,9 @@ inputs:
   set:
     description: "List of targets values to override (eg. targetpattern.key=value)"
     required: false
-  source:
-    description: "Remote bake definition to build from"
+  github-token:
+    description: "API token used to authenticate to a Git repository for remote definitions"
+    default: ${{ github.token }}
     required: false
 
 outputs:
@@ -54,5 +58,6 @@ outputs:
     description: 'Build result metadata'
 
 runs:
-  using: 'node16'
+  using: 'node20'
   main: 'dist/index.js'
+  post: 'dist/index.js'

dev.Dockerfile

@@ -1,15 +1,20 @@
 # syntax=docker/dockerfile:1
 
-ARG NODE_VERSION=16
-ARG DOCKER_VERSION=20.10.13
-ARG BUILDX_VERSION=0.8.1
+ARG NODE_VERSION=20
 
 FROM node:${NODE_VERSION}-alpine AS base
 RUN apk add --no-cache cpio findutils git
 WORKDIR /src
+RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/.yarn/cache <<EOT
+  corepack enable
+  yarn --version
+  yarn config set --home enableTelemetry 0
+EOT
 
 FROM base AS deps
 RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/.yarn/cache \
   --mount=type=cache,target=/src/node_modules \
   yarn install && mkdir /vendor && cp yarn.lock /vendor
 
@@ -30,6 +35,7 @@ EOT
 
 FROM deps AS build
 RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/.yarn/cache \
   --mount=type=cache,target=/src/node_modules \
   yarn run build && mkdir /out && cp -Rf dist /out/
 
@@ -50,27 +56,25 @@ EOT
 
 FROM deps AS format
 RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/.yarn/cache \
   --mount=type=cache,target=/src/node_modules \
   yarn run format \
-  && mkdir /out && find . -name '*.ts' -not -path './node_modules/*' | cpio -pdm /out
+  && mkdir /out && find . -name '*.ts' -not -path './node_modules/*' -not -path './.yarn/*' | cpio -pdm /out
 
 FROM scratch AS format-update
 COPY --from=format /out /
 
 FROM deps AS lint
 RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/.yarn/cache \
   --mount=type=cache,target=/src/node_modules \
   yarn run lint
 
-FROM docker:${DOCKER_VERSION} as docker
-FROM docker/buildx-bin:${BUILDX_VERSION} as buildx
-
 FROM deps AS test
 RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/.yarn/cache \
   --mount=type=cache,target=/src/node_modules \
-  --mount=type=bind,from=docker,source=/usr/local/bin/docker,target=/usr/bin/docker \
-  --mount=type=bind,from=buildx,source=/buildx,target=/usr/libexec/docker/cli-plugins/docker-buildx \
-  yarn run test --coverageDirectory=/tmp/coverage
+  yarn run test --coverage --coverageDirectory=/tmp/coverage
 
 FROM scratch AS test-coverage
 COPY --from=test /tmp/coverage /

docker-bake.hcl

@@ -3,7 +3,7 @@ group "default" {
 }
 
 group "pre-checkin" {
-  targets = ["vendor-update", "format", "build"]
+  targets = ["vendor", "format", "build"]
 }
 
 group "validate" {
@@ -34,7 +34,7 @@ target "lint" {
   output = ["type=cacheonly"]
 }
 
-target "vendor-update" {
+target "vendor" {
   dockerfile = "dev.Dockerfile"
   target = "vendor-update"
   output = ["."]

package.json

@@ -1,13 +1,16 @@
 {
   "name": "docker-buildx-bake",
   "description": "GitHub Action to use Docker Buildx Bake as a high-level build command",
-  "main": "lib/main.js",
+  "main": "src/main.ts",
   "scripts": {
-    "build": "ncc build src/main.ts --source-map --minify --license licenses.txt",
-    "lint": "eslint src/**/*.ts __tests__/**/*.ts",
-    "format": "eslint --fix src/**/*.ts __tests__/**/*.ts",
-    "test": "jest --coverage",
-    "all": "yarn run build && yarn run format && yarn test"
+    "build": "ncc build --source-map --minify --license licenses.txt",
+    "lint": "yarn run prettier && yarn run eslint",
+    "format": "yarn run prettier:fix && yarn run eslint:fix",
+    "eslint": "eslint --max-warnings=0 .",
+    "eslint:fix": "eslint --fix .",
+    "prettier": "prettier --check \"./**/*.ts\"",
+    "prettier:fix": "prettier --write \"./**/*.ts\"",
+    "test": "jest"
   },
   "repository": {
     "type": "git",
@@ -19,31 +22,27 @@
     "buildx",
     "bake"
   ],
-  "author": "Docker",
-  "contributors": [
-    {
-      "name": "CrazyMax",
-      "url": "https://crazymax.dev"
-    }
-  ],
+  "author": "Docker Inc.",
   "license": "Apache-2.0",
+  "packageManager": "yarn@3.6.3",
   "dependencies": {
-    "@actions/core": "^1.10.0",
-    "@docker/actions-toolkit": "^0.5.0"
+    "@actions/core": "^1.10.1",
+    "@docker/actions-toolkit": "^0.28.0",
+    "handlebars": "^4.7.8"
   },
   "devDependencies": {
-    "@types/node": "^16.18.21",
-    "@typescript-eslint/eslint-plugin": "^5.56.0",
-    "@typescript-eslint/parser": "^5.56.0",
-    "@vercel/ncc": "^0.36.1",
-    "eslint": "^8.36.0",
-    "eslint-config-prettier": "^8.8.0",
-    "eslint-plugin-jest": "^27.2.1",
-    "eslint-plugin-prettier": "^4.2.1",
-    "jest": "^29.5.0",
-    "prettier": "^2.8.7",
-    "ts-jest": "^29.0.5",
-    "ts-node": "^10.9.1",
-    "typescript": "^4.9.5"
+    "@types/node": "^20.12.12",
+    "@typescript-eslint/eslint-plugin": "^7.9.0",
+    "@typescript-eslint/parser": "^7.9.0",
+    "@vercel/ncc": "^0.38.1",
+    "eslint": "^8.57.0",
+    "eslint-config-prettier": "^9.1.0",
+    "eslint-plugin-jest": "^28.5.0",
+    "eslint-plugin-prettier": "^5.1.3",
+    "jest": "^29.7.0",
+    "prettier": "^3.2.5",
+    "ts-jest": "^29.1.2",
+    "ts-node": "^10.9.2",
+    "typescript": "^5.4.5"
   }
 }

src/context.ts

@@ -1,16 +1,21 @@
 import * as core from '@actions/core';
+import * as handlebars from 'handlebars';
+
 import {Bake} from '@docker/actions-toolkit/lib/buildx/bake';
-import {Inputs as BuildxInputs} from '@docker/actions-toolkit/lib/buildx/inputs';
+import {Build} from '@docker/actions-toolkit/lib/buildx/build';
+import {Context} from '@docker/actions-toolkit/lib/context';
 import {GitHub} from '@docker/actions-toolkit/lib/github';
 import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
 import {Util} from '@docker/actions-toolkit/lib/util';
 
+import {BakeDefinition} from '@docker/actions-toolkit/lib/types/buildx/bake';
+
 export interface Inputs {
   builder: string;
   files: string[];
   workdir: string;
   targets: string[];
-  noCache: boolean;
+  'no-cache': boolean;
   pull: boolean;
   load: boolean;
   provenance: string;
@@ -18,6 +23,7 @@ export interface Inputs {
   sbom: string;
   set: string[];
   source: string;
+  'github-token': string;
 }
 
 export async function getInputs(): Promise<Inputs> {
@@ -26,27 +32,50 @@ export async function getInputs(): Promise<Inputs> {
     files: Util.getInputList('files'),
     workdir: core.getInput('workdir') || '.',
     targets: Util.getInputList('targets'),
-    noCache: core.getBooleanInput('no-cache'),
+    'no-cache': core.getBooleanInput('no-cache'),
     pull: core.getBooleanInput('pull'),
     load: core.getBooleanInput('load'),
-    provenance: BuildxInputs.getProvenanceInput('provenance'),
+    provenance: Build.getProvenanceInput('provenance'),
     push: core.getBooleanInput('push'),
     sbom: core.getInput('sbom'),
     set: Util.getInputList('set', {ignoreComma: true, quote: false}),
-    source: core.getInput('source')
+    source: getSourceInput('source'),
+    'github-token': core.getInput('github-token')
   };
 }
 
-export async function getArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<string>> {
+export function sanitizeInputs(inputs: Inputs) {
+  const res = {};
+  for (const key of Object.keys(inputs)) {
+    if (key === 'github-token') {
+      continue;
+    }
+    const value: string | string[] | boolean = inputs[key];
+    if (typeof value === 'boolean' && value === false) {
+      continue;
+    } else if (Array.isArray(value) && value.length === 0) {
+      continue;
+    } else if (!value) {
+      continue;
+    }
+    if (key === 'workdir' && value === '.') {
+      continue;
+    }
+    res[key] = value;
+  }
+  return res;
+}
+
+export async function getArgs(inputs: Inputs, definition: BakeDefinition, toolkit: Toolkit): Promise<Array<string>> {
   // prettier-ignore
   return [
-    ...await getBakeArgs(inputs, toolkit),
+    ...await getBakeArgs(inputs, definition, toolkit),
     ...await getCommonArgs(inputs),
     ...inputs.targets
   ];
 }
 
-async function getBakeArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<string>> {
+async function getBakeArgs(inputs: Inputs, definition: BakeDefinition, toolkit: Toolkit): Promise<Array<string>> {
   const args: Array<string> = ['bake'];
   if (inputs.source) {
     args.push(inputs.source);
@@ -58,23 +87,22 @@ async function getBakeArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<stri
     args.push('--set', set);
   });
   if (await toolkit.buildx.versionSatisfies('>=0.6.0')) {
-    args.push('--metadata-file', BuildxInputs.getBuildMetadataFilePath());
+    args.push('--metadata-file', toolkit.buildxBake.getMetadataFilePath());
   }
   if (await toolkit.buildx.versionSatisfies('>=0.10.0')) {
-    const bakedef = await toolkit.bake.parseDefinitions([...inputs.files, inputs.source], inputs.targets, inputs.set, inputs.load, inputs.push, inputs.workdir);
     if (inputs.provenance) {
       args.push('--provenance', inputs.provenance);
-    } else if ((await toolkit.buildkit.versionSatisfies(inputs.builder, '>=0.11.0')) && !Bake.hasDockerExporter(bakedef, inputs.load)) {
+    } else if ((await toolkit.buildkit.versionSatisfies(inputs.builder, '>=0.11.0')) && !Bake.hasDockerExporter(definition, inputs.load)) {
       // if provenance not specified and BuildKit version compatible for
       // attestation, set default provenance. Also needs to make sure user
       // doesn't want to explicitly load the image to docker.
       if (GitHub.context.payload.repository?.private ?? false) {
         // if this is a private repository, we set the default provenance
         // attributes being set in buildx: https://github.com/docker/buildx/blob/fb27e3f919dcbf614d7126b10c2bc2d0b1927eb6/build/build.go#L603
-        args.push('--provenance', BuildxInputs.resolveProvenanceAttrs(`mode=min,inline-only=true`));
+        args.push('--provenance', Build.resolveProvenanceAttrs(`mode=min,inline-only=true`));
       } else {
         // for a public repository, we set max provenance mode.
-        args.push('--provenance', BuildxInputs.resolveProvenanceAttrs(`mode=max`));
+        args.push('--provenance', Build.resolveProvenanceAttrs(`mode=max`));
       }
     }
     if (inputs.sbom) {
@@ -86,7 +114,7 @@ async function getBakeArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<stri
 
 async function getCommonArgs(inputs: Inputs): Promise<Array<string>> {
   const args: Array<string> = [];
-  if (inputs.noCache) {
+  if (inputs['no-cache']) {
     args.push('--no-cache');
   }
   if (inputs.builder) {
@@ -103,3 +131,13 @@ async function getCommonArgs(inputs: Inputs): Promise<Array<string>> {
   }
   return args;
 }
+
+function getSourceInput(name: string): string {
+  let source = handlebars.compile(core.getInput(name))({
+    defaultContext: Context.gitContext()
+  });
+  if (source === '.') {
+    source = '';
+  }
+  return source;
+}

src/main.ts

@@ -1,12 +1,19 @@
 import * as fs from 'fs';
+import * as path from 'path';
 import * as core from '@actions/core';
 import * as actionsToolkit from '@docker/actions-toolkit';
-import {Inputs as BuildxInputs} from '@docker/actions-toolkit/lib/buildx/inputs';
+
+import {Buildx} from '@docker/actions-toolkit/lib/buildx/buildx';
+import {History as BuildxHistory} from '@docker/actions-toolkit/lib/buildx/history';
 import {Context} from '@docker/actions-toolkit/lib/context';
 import {Docker} from '@docker/actions-toolkit/lib/docker/docker';
 import {Exec} from '@docker/actions-toolkit/lib/exec';
 import {GitHub} from '@docker/actions-toolkit/lib/github';
 import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
+import {Util} from '@docker/actions-toolkit/lib/util';
+
+import {BakeDefinition} from '@docker/actions-toolkit/lib/types/buildx/bake';
+import {ConfigFile} from '@docker/actions-toolkit/lib/types/docker/docker';
 
 import * as context from './context';
 import * as stateHelper from './state-helper';
@@ -14,11 +21,14 @@ import * as stateHelper from './state-helper';
 actionsToolkit.run(
   // main
   async () => {
+    const startedTime = new Date();
+
     const inputs: context.Inputs = await context.getInputs();
+    core.debug(`inputs: ${JSON.stringify(inputs)}`);
+    stateHelper.setInputs(inputs);
+
     const toolkit = new Toolkit();
-    if (await toolkit.buildx.versionSatisfies('>=0.20.0')) {
-      throw new Error('docker/bake-action < v5 is not compatible with buildx >= 0.20.0, please update your workflow to latest docker/bake-action or use an older buildx version.');
-    }
+    const gitAuthToken = process.env.BUILDX_BAKE_GIT_AUTH_TOKEN ?? inputs['github-token'];
 
     await core.group(`GitHub Actions runtime token ACs`, async () => {
       try {
@@ -37,6 +47,31 @@ actionsToolkit.run(
       }
     });
 
+    await core.group(`Proxy configuration`, async () => {
+      let dockerConfig: ConfigFile | undefined;
+      let dockerConfigMalformed = false;
+      try {
+        dockerConfig = await Docker.configFile();
+      } catch (e) {
+        dockerConfigMalformed = true;
+        core.warning(`Unable to parse config file ${path.join(Docker.configDir, 'config.json')}: ${e}`);
+      }
+      if (dockerConfig && dockerConfig.proxies) {
+        for (const host in dockerConfig.proxies) {
+          let prefix = '';
+          if (Object.keys(dockerConfig.proxies).length > 1) {
+            prefix = '  ';
+            core.info(host);
+          }
+          for (const key in dockerConfig.proxies[host]) {
+            core.info(`${prefix}${key}: ${dockerConfig.proxies[host][key]}`);
+          }
+        }
+      } else if (!dockerConfigMalformed) {
+        core.info('No proxy configuration found');
+      }
+    });
+
     if (!(await toolkit.buildx.isAvailable())) {
       core.setFailed(`Docker buildx is required. See https://github.com/docker/setup-buildx-action to set up buildx.`);
       return;
@@ -48,34 +83,121 @@ actionsToolkit.run(
       await toolkit.buildx.printVersion();
     });
 
-    const args: string[] = await context.getArgs(inputs, toolkit);
+    await core.group(`Builder info`, async () => {
+      const builder = await toolkit.builder.inspect(inputs.builder);
+      core.info(JSON.stringify(builder, null, 2));
+      stateHelper.setBuilder(builder);
+    });
+
+    let definition: BakeDefinition | undefined;
+    await core.group(`Parsing raw definition`, async () => {
+      definition = await toolkit.buildxBake.getDefinition(
+        {
+          files: inputs.files,
+          load: inputs.load,
+          noCache: inputs['no-cache'],
+          overrides: inputs.set,
+          provenance: inputs.provenance,
+          push: inputs.push,
+          sbom: inputs.sbom,
+          source: inputs.source,
+          targets: inputs.targets,
+          githubToken: gitAuthToken
+        },
+        {
+          cwd: inputs.workdir
+        }
+      );
+    });
+    if (!definition) {
+      throw new Error('Bake definition not set');
+    }
+    stateHelper.setBakeDefinition(definition);
+
+    const args: string[] = await context.getArgs(inputs, definition, toolkit);
     const buildCmd = await toolkit.buildx.getCommand(args);
+    const buildEnv = Object.assign({}, process.env, {
+      BUILDX_BAKE_GIT_AUTH_TOKEN: gitAuthToken
+    }) as {
+      [key: string]: string;
+    };
 
     await core.group(`Bake definition`, async () => {
       await Exec.exec(buildCmd.command, [...buildCmd.args, '--print'], {
-        cwd: inputs.workdir
+        cwd: inputs.workdir,
+        env: buildEnv
       });
     });
 
+    let err: Error | undefined;
     await Exec.getExecOutput(buildCmd.command, buildCmd.args, {
       cwd: inputs.workdir,
+      env: buildEnv,
       ignoreReturnCode: true
     }).then(res => {
       if (res.stderr.length > 0 && res.exitCode != 0) {
-        throw new Error(`buildx bake failed with: ${res.stderr.match(/(.*)\s*$/)?.[0]?.trim() ?? 'unknown error'}`);
+        err = Error(`buildx bake failed with: ${res.stderr.match(/(.*)\s*$/)?.[0]?.trim() ?? 'unknown error'}`);
       }
     });
 
-    const metadata = await BuildxInputs.resolveBuildMetadata();
+    const metadata = toolkit.buildxBake.resolveMetadata();
     if (metadata) {
       await core.group(`Metadata`, async () => {
-        core.info(metadata);
-        core.setOutput('metadata', metadata);
+        const metadatadt = JSON.stringify(metadata, null, 2);
+        core.info(metadatadt);
+        core.setOutput('metadata', metadatadt);
       });
     }
+    await core.group(`Build references`, async () => {
+      const refs = await buildRefs(toolkit, startedTime, inputs.builder);
+      if (refs) {
+        for (const ref of refs) {
+          core.info(ref);
+        }
+        stateHelper.setBuildRefs(refs);
+      } else {
+        core.warning('No build refs found');
+      }
+    });
+    if (err) {
+      throw err;
+    }
   },
   // post
   async () => {
+    if (stateHelper.buildRefs.length > 0) {
+      await core.group(`Generating build summary`, async () => {
+        if (process.env.DOCKER_BUILD_NO_SUMMARY && Util.parseBool(process.env.DOCKER_BUILD_NO_SUMMARY)) {
+          core.info('Summary disabled');
+          return;
+        }
+        if (stateHelper.builder && stateHelper.builder.driver === 'cloud') {
+          core.info('Summary is not yet supported with Docker Build Cloud');
+          return;
+        }
+        try {
+          const exportRetentionDays = buildExportRetentionDays();
+          const buildxHistory = new BuildxHistory();
+          const exportRes = await buildxHistory.export({
+            refs: stateHelper.buildRefs
+          });
+          core.info(`Build records exported to ${exportRes.dockerbuildFilename} (${Util.formatFileSize(exportRes.dockerbuildSize)})`);
+          const uploadRes = await GitHub.uploadArtifact({
+            filename: exportRes.dockerbuildFilename,
+            mimeType: 'application/gzip',
+            retentionDays: exportRetentionDays
+          });
+          await GitHub.writeBuildSummary({
+            exportRes: exportRes,
+            uploadRes: uploadRes,
+            inputs: stateHelper.inputs,
+            bakeDefinition: stateHelper.bakeDefinition
+          });
+        } catch (e) {
+          core.warning(e.message);
+        }
+      });
+    }
     if (stateHelper.tmpDir.length > 0) {
       await core.group(`Removing temp folder ${stateHelper.tmpDir}`, async () => {
         fs.rmSync(stateHelper.tmpDir, {recursive: true});
@@ -83,3 +205,38 @@ actionsToolkit.run(
     }
   }
 );
+
+async function buildRefs(toolkit: Toolkit, since: Date, builder?: string): Promise<Array<string>> {
+  // get refs from metadata file
+  const metaRefs = toolkit.buildxBake.resolveRefs();
+  if (metaRefs) {
+    return metaRefs;
+  }
+  // otherwise, look for the very first build ref since the build has started
+  if (!builder) {
+    const currentBuilder = await toolkit.builder.inspect();
+    builder = currentBuilder.name;
+  }
+  const res = Buildx.refs({
+    dir: Buildx.refsDir,
+    builderName: builder,
+    since: since
+  });
+  const refs: Array<string> = [];
+  for (const ref in res) {
+    if (Object.prototype.hasOwnProperty.call(res, ref)) {
+      refs.push(ref);
+    }
+  }
+  return refs;
+}
+
+function buildExportRetentionDays(): number | undefined {
+  if (process.env.DOCKER_BUILD_EXPORT_RETENTION_DAYS) {
+    const res = parseInt(process.env.DOCKER_BUILD_EXPORT_RETENTION_DAYS);
+    if (isNaN(res)) {
+      throw Error(`Invalid build export retention days: ${process.env.DOCKER_BUILD_EXPORT_RETENTION_DAYS}`);
+    }
+    return res;
+  }
+}

src/state-helper.ts

@@ -1,7 +1,32 @@
 import * as core from '@actions/core';
 
+import {BakeDefinition} from '@docker/actions-toolkit/lib/types/buildx/bake';
+import {BuilderInfo} from '@docker/actions-toolkit/lib/types/buildx/builder';
+
+import {Inputs, sanitizeInputs} from './context';
+
 export const tmpDir = process.env['STATE_tmpDir'] || '';
+export const inputs = process.env['STATE_inputs'] ? JSON.parse(process.env['STATE_inputs']) : undefined;
+export const builder = process.env['STATE_builder'] ? <BuilderInfo>JSON.parse(process.env['STATE_builder']) : undefined;
+export const bakeDefinition = process.env['STATE_bakeDefinition'] ? <BakeDefinition>JSON.parse(process.env['STATE_bakeDefinition']) : undefined;
+export const buildRefs = process.env['STATE_buildRefs'] ? process.env['STATE_buildRefs'].split(',') : [];
 
 export function setTmpDir(tmpDir: string) {
   core.saveState('tmpDir', tmpDir);
 }
+
+export function setInputs(inputs: Inputs) {
+  core.saveState('inputs', JSON.stringify(sanitizeInputs(inputs)));
+}
+
+export function setBuilder(builder: BuilderInfo) {
+  core.saveState('builder', JSON.stringify(builder));
+}
+
+export function setBakeDefinition(bakeDefinition: BakeDefinition) {
+  core.saveState('bakeDefinition', JSON.stringify(bakeDefinition));
+}
+
+export function setBuildRefs(buildRefs: Array<string>) {
+  core.saveState('buildRefs', buildRefs.join(','));
+}

subaction/list-targets/action.yml

@@ -0,0 +1,61 @@
+# https://docs.github.com/en/actions/creating-actions/metadata-syntax-for-github-actions
+name: 'List Bake targets'
+description: 'Generate a list of Bake targets to help distributing builds in your workflow'
+
+inputs:
+  workdir:
+    description: Working directory
+    default: '.'
+    required: false
+  files:
+    description: Comma separated list of Bake files
+    required: false
+  target:
+    description: Bake target
+    required: false
+
+outputs:
+  targets:
+    description: List of targets
+    value: ${{ steps.generate.outputs.targets }}
+
+runs:
+  using: composite
+  steps:
+    -
+      name: Generate
+      id: generate
+      uses: actions/github-script@v7
+      with:
+        script: |
+          let def;
+          const files = `${{ inputs.files }}` ? `${{ inputs.files }}`.split(',') : [];
+          const target = `${{ inputs.target }}`;
+
+          await core.group(`Validating definition`, async () => {
+            let args = ['buildx', 'bake'];
+            for (const file of files) {
+              args.push('--file', file);
+            }
+            if (target) {
+              args.push(target);
+            }
+            args.push('--print');
+
+            const res = await exec.getExecOutput('docker', args, {
+              ignoreReturnCode: true,
+              silent: true,
+              cwd: `${{ inputs.workdir }}`
+            });
+            if (res.stderr.length > 0 && res.exitCode != 0) {
+              throw new Error(res.stderr);
+            }
+            def = JSON.parse(res.stdout.trim());
+            core.info(JSON.stringify(def, null, 2));
+          });
+
+          await core.group(`Set output`, async () => {
+            const targets = Object.keys(def.target);
+            core.info(`targets: ${JSON.stringify(targets)}`);
+            core.setOutput('targets', JSON.stringify(targets));
+          });

test/config.hcl

@@ -37,3 +37,8 @@ target "app-plus" {
     IAMPLUS = "true"
   }
 }
+
+target "app-proxy" {
+  inherits = ["app"]
+  dockerfile = "proxy.Dockerfile"
+}

test/group-matrix/docker-bake.hcl

@@ -0,0 +1,31 @@
+group "validate" {
+  targets = ["lint", "validate-vendor", "validate-doctoc"]
+}
+
+target "lint" {
+  name = "lint-${buildtags.name}"
+  dockerfile = "./hack/dockerfiles/lint.Dockerfile"
+  target = buildtags.target
+  output = ["type=cacheonly"]
+  matrix = {
+    buildtags = [
+      { name = "default", tags = "", target = "golangci-lint" },
+      { name = "labs", tags = "dfrunsecurity dfparents", target = "golangci-lint" },
+      { name = "nydus", tags = "nydus", target = "golangci-lint" },
+      { name = "yaml", tags = "", target = "yamllint" },
+      { name = "proto", tags = "", target = "protolint" },
+    ]
+  }
+}
+
+target "validate-vendor" {
+  dockerfile = "./hack/dockerfiles/vendor.Dockerfile"
+  target = "validate"
+  output = ["type=cacheonly"]
+}
+
+target "validate-doctoc" {
+  dockerfile = "./hack/dockerfiles/doctoc.Dockerfile"
+  target = "validate-toc"
+  output = ["type=cacheonly"]
+}

test/proxy.Dockerfile

@@ -0,0 +1,9 @@
+# syntax=docker/dockerfile:1
+FROM alpine
+RUN apk add --no-cache curl net-tools
+ARG HTTP_PROXY
+ARG HTTPS_PROXY
+RUN printenv HTTP_PROXY
+RUN printenv HTTPS_PROXY
+RUN netstat -aptn
+RUN curl --retry 5 --retry-all-errors --retry-delay 0 --connect-timeout 5 --proxy $HTTP_PROXY -v --insecure --head https://www.google.com