Merge pull request #59 from crazy-max/outputs

Enhance outputs display

.dev/readme.md

@@ -1,11 +0,0 @@
-https://github.com/homoluctus/slatify/
-https://github.com/technote-space/toc-generator/commit/06ca2702bc545e4c2a31bc8b6cfd052de59b0af5/checks?check_suite_id=250009775
-https://github.com/technote-space/release-github-actions
-
-
-docker buildx rm builder
-docker run --rm --privileged multiarch/qemu-user-static:register --reset -p yes --credential yes
-docker buildx create --name builder --driver docker-container --use
-docker buildx inspect --bootstrap
-
-docker buildx build --platform linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/386,linux/ppc64le,linux/s390x --output "type=image,push=false" -t buildx --file ./test/Dockerfile-sudo ./test

.dev/release.yml

@@ -1,87 +0,0 @@
-name: release
-
-on:
-  create
-
-on:
-  push:
-    branches:
-      - releases/*
-    paths:
-      - src/*
-
-jobs:
-  release:
-    runs-on: ubuntu-18.04
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v1
-        with:
-          ref: remotes/origin/releases/v1
-      -
-        name: Git checkout
-        run: git checkout -b releases/v1
-      -
-        name: Install
-        run: npm install
-      -
-        name: Build
-        run: npm run build
-      -
-        name: Not ignore node_modules
-        run: sed -i '/node_modules*/d' .gitignore
-      -
-        name: Install production deps
-        run: |
-          rm -rf node_modules
-          npm install --production
-      -
-        name: Setup Git
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-        run: |
-          git config user.name "${GITHUB_ACTOR}"
-          git config user.email "${GITHUB_ACTOR}@users.noreply.github.com"
-          git remote set-url origin https://x-access-token:${GITHUB_TOKEN}@github.com/${GITHUB_REPOSITORY}.git
-      -
-        name: Git commit
-        run: |
-          git add -A
-          DIFF=`git diff --cached --numstat | wc -l`
-          if [ $DIFF -eq 0 ]; then
-            exit 0
-          fi
-          git commit -am 'Build for release'
-      -
-        name: Git push
-        run: git push origin HEAD
-
-  check:
-    runs-on: ubuntu-18.04
-    needs: release
-    strategy:
-      matrix:
-        version:
-          - latest
-          - v0.2.2
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v1
-      -
-        name: Set up Docker Buildx
-        id: buildx
-        uses: crazy-max/ghaction-docker-buildx@releases/v1
-        with:
-          version: ${{ matrix.version }}
-      -
-        name: Available platforms
-        run: echo ${{ steps.buildx.outputs.platforms }}
-      -
-        name: Run Buildx
-        run: |
-          docker buildx build \
-            --platform linux/386,linux/amd64,linux/arm/v6,linux/arm/v7,linux/arm64,linux/ppc64le,linux/s390x \
-            --output "type=image,push=false" \
-            --file ./test/Dockerfile ./test

.dockerignore

@@ -0,0 +1,2 @@
+/coverage
+/node_modules

.github/CONTRIBUTING.md

@@ -2,21 +2,24 @@
 
 Hi there! We're thrilled that you'd like to contribute to this project. Your help is essential for keeping it great.
 
-Contributions to this project are [released](https://help.github.com/articles/github-terms-of-service/#6-contributions-under-repository-license) to the public under the [project's open source license](LICENSE).
+Contributions to this project are [released](https://docs.github.com/en/github/site-policy/github-terms-of-service#6-contributions-under-repository-license)
+to the public under the [project's open source license](LICENSE).
 
 ## Submitting a pull request
 
-1. [Fork](https://github.com/crazy-max/ghaction-docker-buildx-bake/fork) and clone the repository
+1. [Fork](https://github.com/docker/bake-action/fork) and clone the repository
 2. Configure and install the dependencies: `yarn install`
-3. Make sure the tests pass on your machine: `yarn run test`
-4. Create a new branch: `git checkout -b my-branch-name`
-5. Make your change, add tests, and make sure the tests still pass
-6. Run pre-checkin: `yarn run pre-checkin`
-7. Push to your fork and [submit a pull request](https://github.com/crazy-max/ghaction-docker-buildx-bake/compare)
-8. Pat your self on the back and wait for your pull request to be reviewed and merged.
+3. Create a new branch: `git checkout -b my-branch-name`
+4. Make your changes
+5. Make sure the tests pass: `docker buildx bake test`
+6. Format code and build javascript artifacts: `docker buildx bake pre-checkin`
+7. Validate all code has correctly formatted and built: `docker buildx bake validate`
+8. Push to your fork and [submit a pull request](https://github.com/docker/bake-action/compare)
+9. Pat your self on the back and wait for your pull request to be reviewed and merged.
 
 Here are a few things you can do that will increase the likelihood of your pull request being accepted:
 
+- Write tests.
 - Make sure the `README.md` and any other relevant **documentation are kept up-to-date**.
 - We try to follow [SemVer v2.0.0](https://semver.org/). Randomly breaking public APIs is not an option.
 - Keep your change as focused as possible. If there are multiple changes you would like to make that are not dependent upon each other, consider submitting them as **separate pull requests**.
@@ -25,5 +28,5 @@ Here are a few things you can do that will increase the likelihood of your pull
 ## Resources
 
 - [How to Contribute to Open Source](https://opensource.guide/how-to-contribute/)
-- [Using Pull Requests](https://help.github.com/articles/about-pull-requests/)
-- [GitHub Help](https://help.github.com)
+- [Using Pull Requests](https://docs.github.com/en/github/collaborating-with-issues-and-pull-requests/about-pull-requests)
+- [GitHub Help](https://docs.github.com/en)

.github/ISSUE_TEMPLATE/bug_report.md

@@ -30,4 +30,5 @@ about: Create a report to help us improve
 
 ### Logs
 
-> Download the [log file of your build](https://help.github.com/en/actions/configuring-and-managing-workflows/managing-a-workflow-run#downloading-logs) and [attach it](https://help.github.com/en/github/managing-your-work-on-github/file-attachments-on-issues-and-pull-requests) to this issue.
+> 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/SUPPORT.md

@@ -1,10 +1,10 @@
-# Support [![](https://isitmaintained.com/badge/resolution/crazy-max/ghaction-docker-buildx-bake.svg)](https://isitmaintained.com/project/crazy-max/ghaction-docker-buildx-bake)
+# 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/crazy-max/ghaction-docker-buildx-bake/issues?utf8=%E2%9C%93&q=) to see if the issue or feature request has already been filed.
+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.
 
@@ -23,7 +23,7 @@ File a single issue per problem and feature request.
 
 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/crazy-max/ghaction-docker-buildx-bake/issues/new/choose)!
+You are now ready to [create a new issue](https://github.com/docker/bake-action/issues/new/choose)!
 
 ## Closure policy
 

.github/dependabot.yml

@@ -5,8 +5,8 @@ updates:
     schedule:
       interval: "daily"
     labels:
-      - ":game_die: dependencies"
-      - ":robot: bot"
+      - "dependencies"
+      - "bot"
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
@@ -14,5 +14,5 @@ updates:
     allow:
       - dependency-type: "production"
     labels:
-      - ":game_die: dependencies"
-      - ":robot: bot"
+      - "dependencies"
+      - "bot"

.github/labels.yml

@@ -1,79 +0,0 @@
-## more info https://github.com/crazy-max/ghaction-github-labeler
-- # automerge
-  name: ":bell: automerge"
-  color: "8f4fbc"
-  description: ""
-- # bot
-  name: ":robot: bot"
-  color: "69cde9"
-  description: ""
-- # bug
-  name: ":bug: bug"
-  color: "b60205"
-  description: ""
-- # dependencies
-  name: ":game_die: dependencies"
-  color: "0366d6"
-  description: ""
-  from_name: "dependencies"
-- # documentation
-  name: ":memo: documentation"
-  color: "c5def5"
-  description: ""
-- # duplicate
-  name: ":busts_in_silhouette: duplicate"
-  color: "cccccc"
-  description: ""
-- # enhancement
-  name: ":sparkles: enhancement"
-  color: "0054ca"
-  description: ""
-- # feature request
-  name: ":bulb: feature request"
-  color: "0e8a16"
-  description: ""
-- # feedback
-  name: ":mega: feedback"
-  color: "03a9f4"
-  description: ""
-- # future maybe
-  name: ":rocket: future maybe"
-  color: "fef2c0"
-  description: ""
-- # good first issue
-  name: ":hatching_chick: good first issue"
-  color: "7057ff"
-  description: ""
-- # help wanted
-  name: ":pray: help wanted"
-  color: "4caf50"
-  description: ""
-- # hold
-  name: ":hand: hold"
-  color: "24292f"
-  description: ""
-- # invalid
-  name: ":no_entry_sign: invalid"
-  color: "e6e6e6"
-  description: ""
-- # maybe bug
-  name: ":interrobang: maybe bug"
-  color: "ff5722"
-  description: ""
-- # needs more info
-  name: ":thinking: needs more info"
-  color: "795548"
-  description: ""
-- # question
-  name: ":question: question"
-  color: "3f51b5"
-  description: ""
-  from_name: "question"
-- # upstream
-  name: ":eyes: upstream"
-  color: "fbca04"
-  description: ""
-- # wontfix
-  name: ":coffin: wontfix"
-  color: "ffffff"
-  description: ""

.github/workflows/ci.yml

@@ -1,12 +1,18 @@
 name: ci
 
 on:
+  schedule:
+    - cron: '0 10 * * *' # everyday at 10am
   push:
     branches:
-      - master
+      - 'master'
+      - 'releases/v*'
+    tags:
+      - 'v*'
   pull_request:
     branches:
-      - master
+      - 'master'
+      - 'releases/v*'
 
 jobs:
   bake:
@@ -25,7 +31,7 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2.3.3
+        uses: actions/checkout@v2
       -
         name: Set up QEMU
         uses: docker/setup-qemu-action@v1
@@ -37,7 +43,6 @@ jobs:
           driver-opts: network=host
       -
         name: Build and push
-        id: docker_build
         uses: ./
         with:
           builder: ${{ steps.buildx.outputs.name }}
@@ -50,3 +55,54 @@ jobs:
         name: Dump context
         if: always()
         uses: crazy-max/ghaction-dump-context@v1
+
+  error-msg:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Build
+        continue-on-error: true
+        uses: ./
+        with:
+          files: |
+            ./test/config.hcl
+          set: |
+            *.platform=linux/amd64,linux/ppc64le,linux/s390x
+      -
+        name: Dump context
+        if: always()
+        uses: crazy-max/ghaction-dump-context@v1
+
+  error-check:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Stop docker
+        run: |
+          sudo systemctl stop docker
+      -
+        name: Build
+        id: bake
+        continue-on-error: true
+        uses: ./
+        with:
+          files: |
+            ./test/config.hcl
+      -
+        name: Check
+        run: |
+          echo "${{ toJson(steps.bake) }}"
+          if [ "${{ steps.bake.outcome }}" != "failure" ] || [ "${{ steps.bake.conclusion }}" != "success" ]; then
+            echo "::error::Should have failed"
+            exit 1
+          fi
+      -
+        name: Dump context
+        if: always()
+        uses: crazy-max/ghaction-dump-context@v1

.github/workflows/labels.yml

@@ -1,20 +0,0 @@
-name: labels
-
-on:
-  push:
-    branches:
-      - 'master'
-    paths:
-      - '.github/labels.yml'
-      - '.github/workflows/labels.yml'
-
-jobs:
-  labeler:
-    runs-on: ubuntu-latest
-    steps:
-      -
-        name: Checkout
-        uses: actions/checkout@v2.3.3
-      -
-        name: Run Labeler
-        uses: crazy-max/ghaction-github-labeler@v3.1.0

.github/workflows/test.yml

@@ -3,10 +3,12 @@ name: test
 on:
   push:
     branches:
-      - master
+      - 'master'
+      - 'releases/v*'
   pull_request:
     branches:
-      - master
+      - 'master'
+      - 'releases/v*'
 
 jobs:
   test:
@@ -14,17 +16,14 @@ jobs:
     steps:
       -
         name: Checkout
-        uses: actions/checkout@v2.3.3
-      -
-        name: Install
-        run: yarn install
+        uses: actions/checkout@v2
       -
         name: Test
-        run: yarn run test
+        uses: docker/bake-action@v1
+        with:
+          targets: test
       -
         name: Upload coverage
-        uses: codecov/codecov-action@v1.0.13
-        if: success()
+        uses: codecov/codecov-action@v2
         with:
-          token: ${{ secrets.CODECOV_TOKEN }}
           file: ./coverage/clover.xml

.github/workflows/validate.yml

@@ -0,0 +1,24 @@
+name: validate
+
+on:
+  push:
+    branches:
+      - 'master'
+      - 'releases/v*'
+  pull_request:
+    branches:
+      - 'master'
+      - 'releases/v*'
+
+jobs:
+  validate:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Validate
+        uses: docker/bake-action@v1
+        with:
+          targets: validate

.gitignore

@@ -1,3 +1,4 @@
+/.dev
 node_modules
 lib
 

.prettierrc.json

@@ -1,5 +1,5 @@
 {
-  "printWidth": 120,
+  "printWidth": 240,
   "tabWidth": 2,
   "useTabs": false,
   "semi": true,

README.md

@@ -1,36 +1,39 @@
-[![GitHub release](https://img.shields.io/github/release/crazy-max/ghaction-docker-buildx-bake.svg?style=flat-square)](https://github.com/crazy-max/ghaction-docker-buildx-bake/releases/latest)
+[![GitHub release](https://img.shields.io/github/release/docker/bake-action.svg?style=flat-square)](https://github.com/docker/bake-action/releases/latest)
 [![GitHub marketplace](https://img.shields.io/badge/marketplace-docker--buildx--bake-blue?logo=github&style=flat-square)](https://github.com/marketplace/actions/docker-buildx-bake)
-[![Test workflow](https://img.shields.io/github/workflow/status/crazy-max/ghaction-docker-buildx-bake/test?label=test&logo=github&style=flat-square)](https://github.com/crazy-max/ghaction-docker-buildx-bake/actions?workflow=test)
-[![Codecov](https://img.shields.io/codecov/c/github/crazy-max/ghaction-docker-buildx-bake?logo=codecov&style=flat-square)](https://codecov.io/gh/crazy-max/ghaction-docker-buildx-bake)
-[![Become a sponsor](https://img.shields.io/badge/sponsor-crazy--max-181717.svg?logo=github&style=flat-square)](https://github.com/sponsors/crazy-max)
-[![Paypal Donate](https://img.shields.io/badge/donate-paypal-00457c.svg?logo=paypal&style=flat-square)](https://www.paypal.me/crazyws)
+[![Test workflow](https://img.shields.io/github/workflow/status/docker/bake-action/test?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://github.com/docker/buildx#buildx-bake-options-target) as a high-level build command.
+GitHub Action to use Docker [Buildx Bake](https://github.com/docker/buildx/blob/master/docs/reference/buildx_bake.md)
+as a high-level build command.
 
-If you are interested, [check out](https://git.io/Je09Y) my other :octocat: GitHub Actions!
+![Screenshot](.github/bake-action.png)
 
 ___
 
 * [Usage](#usage)
 * [Customizing](#customizing)
   * [inputs](#inputs)
+  * [outputs](#outputs)
 * [Keep up-to-date with GitHub Dependabot](#keep-up-to-date-with-github-dependabot)
-* [Limitation](#limitation)
-* [How can I help?](#how-can-i-help)
-* [License](#license)
 
 ## Usage
 
 ```yaml
 name: ci
+
 on:
-  pull_request:
-    branches: master
   push:
-    branches: master
-    tags:
+    branches:
+      - 'master'
+
 jobs:
   bake:
     runs-on: ubuntu-latest
@@ -38,12 +41,8 @@ jobs:
       -
         name: Checkout
         uses: actions/checkout@v2
-      -
-        name: Set up QEMU
-        uses: docker/setup-qemu-action@v1
       -
         name: Set up Docker Buildx
-        id: buildx
         uses: docker/setup-buildx-action@v1
       -
         name: Login to DockerHub
@@ -53,15 +52,9 @@ jobs:
           password: ${{ secrets.DOCKERHUB_TOKEN }}
       -
         name: Build and push
-        uses: crazy-max/ghaction-docker-buildx-bake@v1
+        uses: docker/bake-action@master
         with:
-          builder: ${{ steps.buildx.outputs.name }}
           push: true
-          files: |
-            ./config.hcl
-          targets: |
-            default
-            release
 ```
 
 ## Customizing
@@ -70,28 +63,7 @@ jobs:
 
 Following inputs can be used as `step.with` keys
 
-| Name             | Type    | Description                        |
-|------------------|---------|------------------------------------|
-| `builder`        | String  | Builder instance (see [setup-buildx](https://github.com/docker/setup-buildx-action) action) |
-| `files`          | List    | List of [bake definition files](https://github.com/docker/buildx#file-definition) |
-| `targets`        | List    | List of bake targets |
-| `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`) |
-| `push`           | Bool    | Push is a shorthand for `--set=*.output=type=registry` (default `false`) |
-| `set`            | CSV     | List of [targets values to override](https://github.com/docker/buildx#--set-targetpatternkeysubkeyvalue) (eg: `targetpattern.key=value`) |
-
-> `List` type can be a comma or newline-delimited string
-> ```yaml
-> targets: default,release
-> ```
-> ```yaml
-> targets: |
->   default
->   release
-> ```
-
-> `CSV` type must be a newline-delimited string
+> `List` type is a newline-delimited string
 > ```yaml
 > set: target.args.mybuildarg=value
 > ```
@@ -101,6 +73,30 @@ Following inputs can be used as `step.with` keys
 >   foo*.args.mybuildarg=value
 > ```
 
+> `CSV` type is a comma-delimited string
+> ```yaml
+> 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://github.com/docker/buildx/blob/master/docs/reference/buildx_bake.md#file) |
+| `targets`        | List/CSV | List of bake targets |
+| `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`) |
+| `push`           | Bool     | Push is a shorthand for `--set=*.output=type=registry` (default `false`) |
+| `set`            | List     | List of [targets values to override](https://github.com/docker/buildx/blob/master/docs/reference/buildx_bake.md#set) (eg: `targetpattern.key=value`) |
+
+### outputs
+
+Following outputs are available
+
+| Name              | Type    | Description                           |
+|-------------------|---------|---------------------------------------|
+| `metadata`        | JSON    | Build result metadata |
+
 ## Keep up-to-date with GitHub Dependabot
 
 Since [Dependabot](https://docs.github.com/en/github/administering-a-repository/keeping-your-actions-up-to-date-with-github-dependabot)
@@ -116,20 +112,3 @@ updates:
     schedule:
       interval: "daily"
 ```
-
-## Limitation
-
-This action is only available for Linux [virtual environments](https://help.github.com/en/articles/virtual-environments-for-github-actions#supported-virtual-environments-and-hardware-resources).
-
-## How can I help?
-
-All kinds of contributions are welcome :raised_hands:! The most basic way to show your support is to star :star2:
-the project, or to raise issues :speech_balloon: You can also support this project by
-[**becoming a sponsor on GitHub**](https://github.com/sponsors/crazy-max) :clap: or by making a
-[Paypal donation](https://www.paypal.me/crazyws) to ensure this journey continues indefinitely! :rocket:
-
-Thanks again for your support, it is much appreciated! :pray:
-
-## License
-
-MIT. See `LICENSE` for more details.

__tests__/buildx.test.ts

@@ -1,10 +1,59 @@
+import * as fs from 'fs';
+import * as path from 'path';
 import * as semver from 'semver';
-import * as buildx from '../src/buildx';
 import * as exec from '@actions/exec';
+import * as buildx from '../src/buildx';
+import * as context from '../src/context';
+
+const tmpNameSync = path.join('/tmp/.docker-bake-jest', '.tmpname-jest').split(path.sep).join(path.posix.sep);
+const metadata = `{
+  "containerimage.config.digest": "sha256:059b68a595b22564a1cbc167af369349fdc2ecc1f7bc092c2235cbf601a795fd",
+  "containerimage.digest": "sha256:b09b9482c72371486bb2c1d2c2a2633ed1d0b8389e12c8d52b9e052725c0c83c"
+}`;
+
+jest.spyOn(context, 'tmpDir').mockImplementation((): string => {
+  const tmpDir = path.join('/tmp/.docker-bake-jest').split(path.sep).join(path.posix.sep);
+  if (!fs.existsSync(tmpDir)) {
+    fs.mkdirSync(tmpDir, {recursive: true});
+  }
+  return tmpDir;
+});
+
+jest.spyOn(context, 'tmpNameSync').mockImplementation((): string => {
+  return tmpNameSync;
+});
+
+describe('getMetadata', () => {
+  it('matches', async () => {
+    const metadataFile = await buildx.getMetadataFile();
+    console.log(`metadataFile: ${metadataFile}`);
+    await fs.writeFileSync(metadataFile, metadata);
+    const expected = await buildx.getMetadata();
+    console.log(`metadata: ${expected}`);
+    expect(expected).toEqual(metadata);
+  });
+});
+
+describe('isAvailable', () => {
+  const execSpy: jest.SpyInstance = jest.spyOn(exec, 'getExecOutput');
+  execSpy.mockImplementation(() =>
+    Promise.resolve({
+      exitCode: expect.any(Number),
+      stdout: expect.any(Function),
+      stderr: expect.any(Function)
+    })
+  );
+
+  buildx.isAvailable();
+
+  expect(execSpy).toHaveBeenCalledWith(`docker`, ['buildx'], {
+    silent: true,
+    ignoreReturnCode: true
+  });
+});
 
 describe('getVersion', () => {
   it('valid', async () => {
-    await exec.exec('docker', ['buildx', 'version']);
     const version = await buildx.getVersion();
     console.log(`version: ${version}`);
     expect(semver.valid(version)).not.toBeNull();
@@ -15,8 +64,9 @@ describe('parseVersion', () => {
   test.each([
     ['github.com/docker/buildx 0.4.1+azure bda4882a65349ca359216b135896bddc1d92461c', '0.4.1'],
     ['github.com/docker/buildx v0.4.1 bda4882a65349ca359216b135896bddc1d92461c', '0.4.1'],
-    ['github.com/docker/buildx v0.4.2 fb7b670b764764dc4716df3eba07ffdae4cc47b2', '0.4.2']
+    ['github.com/docker/buildx v0.4.2 fb7b670b764764dc4716df3eba07ffdae4cc47b2', '0.4.2'],
+    ['github.com/docker/buildx f117971 f11797113e5a9b86bd976329c5dbb8a8bfdfadfa', 'f117971']
   ])('given %p', async (stdout, expected) => {
-    expect(await buildx.parseVersion(stdout)).toEqual(expected);
+    expect(buildx.parseVersion(stdout)).toEqual(expected);
   });
 });

__tests__/context.test.ts

@@ -1,68 +1,151 @@
+import * as os from 'os';
 import * as context from '../src/context';
 
 describe('getInputList', () => {
-  it('handles single line correctly', async () => {
+  it('single line correctly', async () => {
     await setInput('foo', 'bar');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar']);
   });
 
-  it('handles multiple lines correctly', async () => {
+  it('multiline correctly', async () => {
     setInput('foo', 'bar\nbaz');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar', 'baz']);
   });
 
-  it('remove empty lines correctly', async () => {
+  it('empty lines correctly', async () => {
     setInput('foo', 'bar\n\nbaz');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar', 'baz']);
   });
 
-  it('handles comma correctly', async () => {
+  it('comma correctly', async () => {
     setInput('foo', 'bar,baz');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar', 'baz']);
   });
 
-  it('remove empty result correctly', async () => {
+  it('empty result correctly', async () => {
     setInput('foo', 'bar,baz,');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar', 'baz']);
   });
 
-  it('handles different new lines correctly', async () => {
+  it('different new lines correctly', async () => {
     setInput('foo', 'bar\r\nbaz');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar', 'baz']);
   });
 
-  it('handles different new lines and comma correctly', async () => {
+  it('different new lines and comma correctly', async () => {
     setInput('foo', 'bar\r\nbaz,bat');
     const res = await context.getInputList('foo');
     console.log(res);
     expect(res).toEqual(['bar', 'baz', 'bat']);
   });
 
-  it('handles multiple lines and ignoring comma correctly', async () => {
+  it('multiline and ignoring comma correctly', async () => {
     setInput('cache-from', 'user/app:cache\ntype=local,src=path/to/dir');
     const res = await context.getInputList('cache-from', true);
     console.log(res);
     expect(res).toEqual(['user/app:cache', 'type=local,src=path/to/dir']);
   });
 
-  it('handles different new lines and ignoring comma correctly', async () => {
+  it('different new lines and ignoring comma correctly', async () => {
     setInput('cache-from', 'user/app:cache\r\ntype=local,src=path/to/dir');
     const res = await context.getInputList('cache-from', true);
     console.log(res);
     expect(res).toEqual(['user/app:cache', 'type=local,src=path/to/dir']);
   });
+
+  it('multiline values', async () => {
+    setInput(
+      'secrets',
+      `GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789
+"MYSECRET=aaaaaaaa
+bbbbbbb
+ccccccccc"
+FOO=bar`
+    );
+    const res = await context.getInputList('secrets', true);
+    console.log(res);
+    expect(res).toEqual([
+      'GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789',
+      `MYSECRET=aaaaaaaa
+bbbbbbb
+ccccccccc`,
+      'FOO=bar'
+    ]);
+  });
+
+  it('multiline values with empty lines', async () => {
+    setInput(
+      'secrets',
+      `GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789
+"MYSECRET=aaaaaaaa
+bbbbbbb
+ccccccccc"
+FOO=bar
+"EMPTYLINE=aaaa
+
+bbbb
+ccc"`
+    );
+    const res = await context.getInputList('secrets', true);
+    console.log(res);
+    expect(res).toEqual([
+      'GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789',
+      `MYSECRET=aaaaaaaa
+bbbbbbb
+ccccccccc`,
+      'FOO=bar',
+      `EMPTYLINE=aaaa
+
+bbbb
+ccc`
+    ]);
+  });
+
+  it('multiline values without quotes', async () => {
+    setInput(
+      'secrets',
+      `GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789
+MYSECRET=aaaaaaaa
+bbbbbbb
+ccccccccc
+FOO=bar`
+    );
+    const res = await context.getInputList('secrets', true);
+    console.log(res);
+    expect(res).toEqual(['GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789', 'MYSECRET=aaaaaaaa', 'bbbbbbb', 'ccccccccc', 'FOO=bar']);
+  });
+
+  it('multiline values escape quotes', async () => {
+    setInput(
+      'secrets',
+      `GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789
+"MYSECRET=aaaaaaaa
+bbbb""bbb
+ccccccccc"
+FOO=bar`
+    );
+    const res = await context.getInputList('secrets', true);
+    console.log(res);
+    expect(res).toEqual([
+      'GIT_AUTH_TOKEN=abcdefgh,ijklmno=0123456789',
+      `MYSECRET=aaaaaaaa
+bbbb\"bbb
+ccccccccc`,
+      'FOO=bar'
+    ]);
+  });
 });
 
 describe('asyncForEach', () => {
@@ -78,7 +161,28 @@ describe('asyncForEach', () => {
   });
 });
 
-// See: https://github.com/actions/toolkit/blob/master/packages/core/src/core.ts#L67
+describe('setOutput', () => {
+  beforeEach(() => {
+    process.stdout.write = jest.fn();
+  });
+
+  it('setOutput produces the correct command', () => {
+    context.setOutput('some output', 'some value');
+    assertWriteCalls([`::set-output name=some output::some value${os.EOL}`]);
+  });
+
+  it('setOutput handles bools', () => {
+    context.setOutput('some output', false);
+    assertWriteCalls([`::set-output name=some output::false${os.EOL}`]);
+  });
+
+  it('setOutput handles numbers', () => {
+    context.setOutput('some output', 1.01);
+    assertWriteCalls([`::set-output name=some output::1.01${os.EOL}`]);
+  });
+});
+
+// See: https://github.com/actions/toolkit/blob/a1b068ec31a042ff1e10a522d8fdf0b8869d53ca/packages/core/src/core.ts#L89
 function getInputName(name: string): string {
   return `INPUT_${name.replace(/ /g, '_').toUpperCase()}`;
 }
@@ -86,3 +190,11 @@ function getInputName(name: string): string {
 function setInput(name: string, value: string): void {
   process.env[getInputName(name)] = value;
 }
+
+// Assert that process.stdout.write calls called only with the given arguments.
+function assertWriteCalls(calls: string[]): void {
+  expect(process.stdout.write).toHaveBeenCalledTimes(calls.length);
+  for (let i = 0; i < calls.length; i++) {
+    expect(process.stdout.write).toHaveBeenNthCalledWith(i + 1, calls[i]);
+  }
+}

action.yml

@@ -1,7 +1,7 @@
 # https://help.github.com/en/articles/metadata-syntax-for-github-actions
 name: "Docker Buildx Bake"
 description: "GitHub Action to use Docker Buildx Bake as a high-level build command"
-author: crazy-max
+author: 'docker'
 branding:
   icon: 'anchor'
   color: 'blue'
@@ -36,7 +36,10 @@ inputs:
     description: "List of targets values to override (eg. targetpattern.key=value)"
     required: false
 
+outputs:
+  metadata:
+    description: 'Build result metadata'
+
 runs:
   using: 'node12'
   main: 'dist/index.js'
-  post: 'dist/index.js'

codecov.yml

@@ -0,0 +1,3 @@
+comment: false
+github_checks:
+  annotations: false

docker-bake.hcl

@@ -0,0 +1,70 @@
+variable "NODE_VERSION" {
+  default = "12"
+}
+
+target "node-version" {
+  args = {
+    NODE_VERSION = NODE_VERSION
+  }
+}
+
+group "default" {
+  targets = ["build"]
+}
+
+group "pre-checkin" {
+  targets = ["vendor-update", "format", "build"]
+}
+
+group "validate" {
+  targets = ["format-validate", "build-validate", "vendor-validate"]
+}
+
+target "build" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "build-update"
+  output = ["."]
+}
+
+target "build-validate" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "build-validate"
+  output = ["type=cacheonly"]
+}
+
+target "format" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "format-update"
+  output = ["."]
+}
+
+target "format-validate" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "format-validate"
+  output = ["type=cacheonly"]
+}
+
+target "vendor-update" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "vendor-update"
+  output = ["."]
+}
+
+target "vendor-validate" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "vendor-validate"
+  output = ["type=cacheonly"]
+}
+
+target "test" {
+  inherits = ["node-version"]
+  dockerfile = "./hack/build.Dockerfile"
+  target = "test-coverage"
+  output = ["./coverage"]
+}

hack/build.Dockerfile

@@ -0,0 +1,78 @@
+# syntax=docker/dockerfile:1.3-labs
+
+ARG NODE_VERSION
+ARG DOCKER_VERSION=20.10.10
+ARG BUILDX_VERSION=0.7.0
+
+FROM node:${NODE_VERSION}-alpine AS base
+RUN apk add --no-cache cpio findutils git
+WORKDIR /src
+
+FROM base AS deps
+RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/node_modules \
+  yarn install && mkdir /vendor && cp yarn.lock /vendor
+
+FROM scratch AS vendor-update
+COPY --from=deps /vendor /
+
+FROM deps AS vendor-validate
+RUN --mount=type=bind,target=.,rw <<EOT
+set -e
+git add -A
+cp -rf /vendor/* .
+if [ -n "$(git status --porcelain -- yarn.lock)" ]; then
+  echo >&2 'ERROR: Vendor result differs. Please vendor your package with "docker buildx bake vendor-update"'
+  git status --porcelain -- yarn.lock
+  exit 1
+fi
+EOT
+
+FROM deps AS build
+RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/node_modules \
+  yarn run build && mkdir /out && cp -Rf dist /out/
+
+FROM scratch AS build-update
+COPY --from=build /out /
+
+FROM build AS build-validate
+RUN --mount=type=bind,target=.,rw <<EOT
+set -e
+git add -A
+cp -rf /out/* .
+if [ -n "$(git status --porcelain -- dist)" ]; then
+  echo >&2 'ERROR: Build result differs. Please build first with "docker buildx bake build"'
+  git status --porcelain -- dist
+  exit 1
+fi
+EOT
+
+FROM deps AS format
+RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/node_modules \
+  yarn run format \
+  && mkdir /out && find . -name '*.ts' -not -path './node_modules/*' | cpio -pdm /out
+
+FROM scratch AS format-update
+COPY --from=format /out /
+
+FROM deps AS format-validate
+RUN --mount=type=bind,target=.,rw \
+  --mount=type=cache,target=/src/node_modules \
+  yarn run format-check
+
+FROM docker:${DOCKER_VERSION} as docker
+FROM docker/buildx-bin:${BUILDX_VERSION} as buildx
+
+FROM deps AS test
+ENV RUNNER_TEMP=/tmp/github_runner
+ENV RUNNER_TOOL_CACHE=/tmp/github_tool_cache
+RUN --mount=type=bind,target=.,rw \
+  --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
+
+FROM scratch AS test-coverage
+COPY --from=test /tmp/coverage /

jest.config.js

@@ -1,5 +1,6 @@
 module.exports = {
   clearMocks: true,
+  restoreMocks: true,
   moduleFileExtensions: ['js', 'ts'],
   setupFiles: ["dotenv/config"],
   testEnvironment: 'node',

package.json

@@ -11,7 +11,7 @@
   },
   "repository": {
     "type": "git",
-    "url": "git+https://github.com/crazy-max/ghaction-docker-buildx-bake.git"
+    "url": "git+https://github.com/docker/bake-action.git"
   },
   "keywords": [
     "actions",
@@ -19,7 +19,7 @@
     "buildx",
     "bake"
   ],
-  "author": "CrazyMax",
+  "author": "Docker",
   "contributors": [
     {
       "name": "CrazyMax",
@@ -28,24 +28,24 @@
   ],
   "license": "Apache-2.0",
   "dependencies": {
-    "@actions/core": "^1.2.6",
-    "@actions/exec": "^1.0.4",
-    "@actions/github": "^4.0.0",
-    "semver": "^7.3.2",
+    "@actions/core": "^1.6.0",
+    "@actions/exec": "^1.1.0",
+    "csv-parse": "^4.16.3",
+    "semver": "^7.3.5",
     "tmp": "^0.2.1"
   },
   "devDependencies": {
-    "@types/jest": "^26.0.3",
-    "@types/node": "^14.0.14",
+    "@types/jest": "^26.0.23",
+    "@types/node": "^14.17.4",
     "@types/tmp": "^0.2.0",
-    "@vercel/ncc": "^0.23.0",
-    "dotenv": "^8.2.0",
-    "jest": "^26.1.0",
-    "jest-circus": "^26.1.0",
-    "jest-runtime": "^26.1.0",
-    "prettier": "^2.0.5",
-    "ts-jest": "^26.1.1",
-    "typescript": "^3.9.5",
+    "@vercel/ncc": "^0.28.6",
+    "dotenv": "^8.6.0",
+    "jest": "^26.6.3",
+    "jest-circus": "^26.6.3",
+    "jest-runtime": "^26.6.3",
+    "prettier": "^2.3.2",
+    "ts-jest": "^26.5.6",
+    "typescript": "^4.3.4",
     "typescript-formatter": "^7.2.2"
   }
 }

src/buildx.ts

@@ -1,28 +1,62 @@
+import fs from 'fs';
+import path from 'path';
 import * as semver from 'semver';
-import * as exec from './exec';
+import * as exec from '@actions/exec';
+
+import * as context from './context';
+
+export async function getMetadataFile(): Promise<string> {
+  return path.join(context.tmpDir(), 'metadata-file').split(path.sep).join(path.posix.sep);
+}
+
+export async function getMetadata(): Promise<string | undefined> {
+  const metadataFile = await getMetadataFile();
+  if (!fs.existsSync(metadataFile)) {
+    return undefined;
+  }
+  const content = fs.readFileSync(metadataFile, {encoding: 'utf-8'}).trim();
+  if (content === 'null') {
+    return undefined;
+  }
+  return content;
+}
 
 export async function isAvailable(): Promise<Boolean> {
-  return await exec.exec(`docker`, ['buildx'], true).then(res => {
-    if (res.stderr != '' && !res.success) {
-      return false;
-    }
-    return res.success;
-  });
+  return await exec
+    .getExecOutput('docker', ['buildx'], {
+      ignoreReturnCode: true,
+      silent: true
+    })
+    .then(res => {
+      if (res.stderr.length > 0 && res.exitCode != 0) {
+        return false;
+      }
+      return res.exitCode == 0;
+    });
 }
 
 export async function getVersion(): Promise<string> {
-  return await exec.exec(`docker`, ['buildx', 'version'], true).then(res => {
-    if (res.stderr != '' && !res.success) {
-      throw new Error(res.stderr);
-    }
-    return parseVersion(res.stdout);
-  });
+  return await exec
+    .getExecOutput('docker', ['buildx', 'version'], {
+      ignoreReturnCode: true,
+      silent: true
+    })
+    .then(res => {
+      if (res.stderr.length > 0 && res.exitCode != 0) {
+        throw new Error(res.stderr.trim());
+      }
+      return parseVersion(res.stdout.trim());
+    });
 }
 
-export async function parseVersion(stdout: string): Promise<string> {
-  const matches = /\sv?([0-9.]+)/.exec(stdout);
+export function parseVersion(stdout: string): string {
+  const matches = /\sv?([0-9a-f]{7}|[0-9.]+)/.exec(stdout);
   if (!matches) {
-    throw new Error(`Cannot parse Buildx version`);
+    throw new Error(`Cannot parse buildx version`);
   }
-  return semver.clean(matches[1]);
+  return matches[1];
+}
+
+export function satisfies(version: string, range: string): boolean {
+  return semver.satisfies(version, range) || /^[0-9a-f]{7}$/.exec(version) !== null;
 }

src/context.ts

@@ -1,5 +1,13 @@
+import csvparse from 'csv-parse/lib/sync';
+import * as fs from 'fs';
+import * as os from 'os';
+import * as path from 'path';
+import * as tmp from 'tmp';
 import * as buildx from './buildx';
 import * as core from '@actions/core';
+import {issueCommand} from '@actions/core/lib/command';
+
+let _tmpDir: string;
 
 export interface Inputs {
   builder: string;
@@ -12,16 +20,27 @@ export interface Inputs {
   set: string[];
 }
 
+export function tmpDir(): string {
+  if (!_tmpDir) {
+    _tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-build-push-')).split(path.sep).join(path.posix.sep);
+  }
+  return _tmpDir;
+}
+
+export function tmpNameSync(options?: tmp.TmpNameOptions): string {
+  return tmp.tmpNameSync(options);
+}
+
 export async function getInputs(): Promise<Inputs> {
   return {
     builder: core.getInput('builder'),
-    files: await getInputList('files'),
-    targets: await getInputList('targets'),
-    noCache: /true/i.test(core.getInput('no-cache')),
-    pull: /true/i.test(core.getInput('pull')),
-    load: /true/i.test(core.getInput('load')),
-    push: /true/i.test(core.getInput('push')),
-    set: await getInputList('set', true)
+    files: getInputList('files'),
+    targets: getInputList('targets'),
+    noCache: core.getBooleanInput('no-cache'),
+    pull: core.getBooleanInput('pull'),
+    load: core.getBooleanInput('load'),
+    push: core.getBooleanInput('push'),
+    set: getInputList('set', true)
   };
 }
 
@@ -41,6 +60,9 @@ async function getBakeArgs(inputs: Inputs, buildxVersion: string): Promise<Array
   await asyncForEach(inputs.set, async set => {
     args.push('--set', set);
   });
+  if (buildx.satisfies(buildxVersion, '>=0.6.0')) {
+    args.push('--metadata-file', await buildx.getMetadataFile());
+  }
   return args;
 }
 
@@ -64,18 +86,30 @@ async function getCommonArgs(inputs: Inputs): Promise<Array<string>> {
   return args;
 }
 
-export async function getInputList(name: string, ignoreComma?: boolean): Promise<string[]> {
+export function getInputList(name: string, ignoreComma?: boolean): string[] {
+  let res: Array<string> = [];
+
   const items = core.getInput(name);
   if (items == '') {
-    return [];
+    return res;
   }
-  return items
-    .split(/\r?\n/)
-    .filter(x => x)
-    .reduce<string[]>(
-      (acc, line) => acc.concat(!ignoreComma ? line.split(',').filter(x => x) : line).map(pat => pat.trim()),
-      []
-    );
+
+  for (let output of csvparse(items, {
+    columns: false,
+    relaxColumnCount: true,
+    skipLinesWithEmptyValues: true
+  }) as Array<string[]>) {
+    if (output.length == 1) {
+      res.push(output[0]);
+      continue;
+    } else if (!ignoreComma) {
+      res.push(...output);
+      continue;
+    }
+    res.push(output.join(','));
+  }
+
+  return res.filter(item => item).map(pat => pat.trim());
 }
 
 export const asyncForEach = async (array, callback) => {
@@ -83,3 +117,8 @@ export const asyncForEach = async (array, callback) => {
     await callback(array[index], index, array);
   }
 };
+
+// FIXME: Temp fix https://github.com/actions/toolkit/issues/777
+export function setOutput(name: string, value: any): void {
+  issueCommand('set-output', {name}, value);
+}

src/exec.ts

@@ -1,34 +0,0 @@
-import * as aexec from '@actions/exec';
-import {ExecOptions} from '@actions/exec';
-
-export interface ExecResult {
-  success: boolean;
-  stdout: string;
-  stderr: string;
-}
-
-export const exec = async (command: string, args: string[] = [], silent: boolean): Promise<ExecResult> => {
-  let stdout: string = '';
-  let stderr: string = '';
-
-  const options: ExecOptions = {
-    silent: silent,
-    ignoreReturnCode: true
-  };
-  options.listeners = {
-    stdout: (data: Buffer) => {
-      stdout += data.toString();
-    },
-    stderr: (data: Buffer) => {
-      stderr += data.toString();
-    }
-  };
-
-  const returnCode: number = await aexec.exec(command, args, options);
-
-  return {
-    success: returnCode === 0,
-    stdout: stdout.trim(),
-    stderr: stderr.trim()
-  };
-};

src/main.ts

@@ -1,32 +1,63 @@
-import * as os from 'os';
+import * as fs from 'fs';
 import * as buildx from './buildx';
 import * as context from './context';
+import * as stateHelper from './state-helper';
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 
 async function run(): Promise<void> {
   try {
-    if (os.platform() !== 'linux') {
-      core.setFailed('Only supported on linux platform');
-      return;
-    }
+    core.startGroup(`Docker info`);
+    await exec.exec('docker', ['version']);
+    await exec.exec('docker', ['info']);
+    core.endGroup();
 
     if (!(await buildx.isAvailable())) {
-      core.setFailed(`Buildx is required. See https://github.com/docker/setup-buildx-action to set up buildx.`);
+      core.setFailed(`Docker buildx is required. See https://github.com/docker/setup-buildx-action to set up buildx.`);
       return;
     }
+    stateHelper.setTmpDir(context.tmpDir());
 
-    const buildxVersion = await buildx.getVersion();
-    core.info(`📣 Buildx version: ${buildxVersion}`);
+    const bxVersion = await buildx.getVersion();
+    const inputs: context.Inputs = await context.getInputs();
+    const args: string[] = await context.getArgs(inputs, bxVersion);
 
-    let inputs: context.Inputs = await context.getInputs();
+    core.startGroup(`Bake definition`);
+    await exec.exec('docker', [...args, '--print']);
+    core.endGroup();
 
-    core.info(`🏃 Starting bake...`);
-    const args: string[] = await context.getArgs(inputs, buildxVersion);
-    await exec.exec('docker', args);
+    await exec
+      .getExecOutput('docker', args, {
+        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()}`);
+        }
+      });
+
+    const metadata = await buildx.getMetadata();
+    if (metadata) {
+      await core.group(`Metadata output`, async () => {
+        core.info(metadata);
+        context.setOutput('metadata', metadata);
+      });
+    }
   } catch (error) {
     core.setFailed(error.message);
   }
 }
 
-run();
+async function cleanup(): Promise<void> {
+  if (stateHelper.tmpDir.length > 0) {
+    core.startGroup(`Removing temp folder ${stateHelper.tmpDir}`);
+    fs.rmdirSync(stateHelper.tmpDir, {recursive: true});
+    core.endGroup();
+  }
+}
+
+if (!stateHelper.IsPost) {
+  run();
+} else {
+  cleanup();
+}

src/state-helper.ts

@@ -0,0 +1,12 @@
+import * as core from '@actions/core';
+
+export const IsPost = !!process.env['STATE_isPost'];
+export const tmpDir = process.env['STATE_tmpDir'] || '';
+
+export function setTmpDir(tmpDir: string) {
+  core.saveState('tmpDir', tmpDir);
+}
+
+if (!IsPost) {
+  core.saveState('isPost', 'true');
+}