Merge pull request #106 from crazy-max/config-inline

Add `config-inline` input

.github/dependabot.yml

@@ -4,19 +4,15 @@ updates:
     directory: "/"
     schedule:
       interval: "daily"
-      time: "06:00"
-      timezone: "Europe/Paris"
     labels:
-      - ":game_die: dependencies"
+      - "dependencies"
-      - ":robot: bot"
+      - "bot"
   - package-ecosystem: "npm"
     directory: "/"
     schedule:
       interval: "daily"
-      time: "06:00"
-      timezone: "Europe/Paris"
     allow:
       - dependency-type: "production"
     labels:
-      - ":game_die: dependencies"
+      - "dependencies"
-      - ":robot: bot"
+      - "bot"

.github/workflows/ci.yml

@@ -278,6 +278,33 @@ jobs:
         with:
           context: .
 
+  config-inline:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Create Dockerfile
+        run: |
+          cat > ./Dockerfile <<EOL
+          FROM alpine
+          EOL
+      -
+        name: Set up Docker Buildx
+        uses: ./
+        with:
+          buildkitd-flags: --debug
+          config-inline: |
+            debug = true
+            [registry."docker.io"]
+              mirrors = ["mirror.gcr.io"]
+      -
+        name: Build
+        uses: docker/build-push-action@v2
+        with:
+          context: .
+
   with-qemu:
     runs-on: ubuntu-latest
     strategy:
@@ -313,3 +340,38 @@ jobs:
           echo "Status:    ${{ steps.buildx.outputs.status }}"
           echo "Flags:     ${{ steps.buildx.outputs.flags }}"
           echo "Platforms: ${{ steps.buildx.outputs.platforms }}"
+
+  build-ref:
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        ref:
+          - master
+          - refs/tags/v0.5.1
+          - refs/pull/731/head
+          - cb185f095fd3d9444e0aa605d3789e9e05f2a1e7
+    steps:
+      -
+        name: Checkout
+        uses: actions/checkout@v2
+      -
+        name: Set up Docker Buildx
+        uses: ./
+        with:
+          version: https://github.com/docker/buildx.git#${{ matrix.ref }}
+      -
+        name: Check version
+        run: |
+          docker buildx version
+      -
+        name: Create Dockerfile
+        run: |
+          cat > ./Dockerfile <<EOL
+          FROM alpine
+          EOL
+      -
+        name: Build
+        uses: docker/build-push-action@master
+        with:
+          context: .

.github/workflows/test.yml

@@ -32,6 +32,6 @@ jobs:
           targets: test
       -
         name: Upload coverage
-        uses: codecov/codecov-action@v1
+        uses: codecov/codecov-action@v2
         with:
           file: ./coverage/clover.xml

.prettierrc.json

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

README.md

@@ -21,6 +21,9 @@ ___
   * [Quick start](#quick-start)
   * [With QEMU](#with-qemu)
   * [Install by default](#install-by-default)
+  * [BuildKit daemon configuration](#buildkit-daemon-configuration)
+    * [Registry mirror](#registry-mirror)
+    * [Max parallelism](#max-parallelism)
 * [Customizing](#customizing)
   * [inputs](#inputs)
   * [outputs](#outputs)
@@ -91,8 +94,6 @@ jobs:
 
 ### Install by default
 
-Implemented with https://github.com/docker/buildx#setting-buildx-as-default-builder-in-docker-1903
-
 ```yaml
 name: ci
 
@@ -117,6 +118,68 @@ jobs:
           docker build . # will run buildx
 ```
 
+### BuildKit daemon configuration
+
+You can provide a [BuildKit configuration](https://github.com/moby/buildkit/blob/master/docs/buildkitd.toml.md)
+to your builder if you're using the [`docker-container` driver](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#driver)
+(default) with the `config` or `config-inline` inputs:
+
+#### Registry mirror
+
+You can configure a registry mirror using an inline block directly in your
+workflow with the `config-inline` input:
+
+```yaml
+name: ci
+
+on:
+  push:
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          config-inline: |
+            [registry."docker.io"]
+              mirrors = ["mirror.gcr.io"]
+```
+
+#### Max parallelism
+
+You can limit the parallelism of the BuildKit solver which is particularly
+useful for low-powered machines.
+
+You can use the `config-inline` input like the
+previous example, or you can use a dedicated BuildKit config file from your
+repo if you want with the `config` input:
+
+```toml
+# .github/buildkitd.toml
+[worker.oci]
+  max-parallelism = 4
+```
+
+```yaml
+name: ci
+
+on:
+  push:
+
+jobs:
+  buildx:
+    runs-on: ubuntu-latest
+    steps:
+      -
+        name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v1
+        with:
+          config: .github/buildkitd.toml
+```
+
 ## Customizing
 
 ### inputs
@@ -125,7 +188,7 @@ Following inputs can be used as `step.with` keys
 
 | Name               | Type    | Description                       |
 |--------------------|---------|-----------------------------------|
-| `version`          | String  | [Buildx](https://github.com/docker/buildx) version. (eg. `v0.3.0`, `latest`) |
+| `version`          | String  | [buildx](https://github.com/docker/buildx) version. (eg. `v0.3.0`, `latest`, `https://github.com/docker/buildx.git#master`) |
 | `driver`           | String  | Sets the [builder driver](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#driver) to be used (default `docker-container`) |
 | `driver-opts`      | CSV     | List of additional [driver-specific options](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#driver-opt) (eg. `image=moby/buildkit:master`) |
 | `buildkitd-flags`  | String  | [Flags for buildkitd](https://github.com/moby/buildkit/blob/master/docs/buildkitd.toml.md) daemon (since [buildx v0.3.0](https://github.com/docker/buildx/releases/tag/v0.3.0)) |
@@ -133,6 +196,9 @@ Following inputs can be used as `step.with` keys
 | `use`              | Bool    | Switch to this builder instance (default `true`) |
 | `endpoint`         | String  | [Optional address for docker socket](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#description) or context from `docker context ls` |
 | `config`           | String  | [BuildKit config file](https://github.com/docker/buildx/blob/master/docs/reference/buildx_create.md#config) |
+| `config-inline`    | String  | Same as `config` but inline |
+
+> `config` and `config-inline` are mutually exclusive.
 
 > `CSV` type must be a newline-delimited string
 > ```yaml

__tests__/buildx.test.ts

@@ -1,10 +1,25 @@
-import fs = require('fs');
+import * as fs from 'fs';
-import * as buildx from '../src/buildx';
-import * as path from 'path';
 import * as os from 'os';
+import * as path from 'path';
+import * as buildx from '../src/buildx';
+import * as context from '../src/context';
 import * as semver from 'semver';
 import * as exec from '@actions/exec';
 
+const tmpNameSync = path.join('/tmp/.docker-setup-buildx-jest', '.tmpname-jest').split(path.sep).join(path.posix.sep);
+
+jest.spyOn(context, 'tmpDir').mockImplementation((): string => {
+  const tmpDir = path.join('/tmp/.docker-setup-buildx-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('isAvailable', () => {
   const execSpy: jest.SpyInstance = jest.spyOn(exec, 'getExecOutput');
   buildx.isAvailable();
@@ -23,7 +38,7 @@ describe('getVersion', () => {
         silent: true
       })
       .then(res => {
-        return !res.stdout.includes(' ') && res.exitCode == 0;
+        return !res.stdout.trim().includes(' ') && res.exitCode == 0;
       });
   }
   (isDaemonRunning() ? it : it.skip)(
@@ -41,9 +56,20 @@ 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);
+  });
+});
+
+describe('satisfies', () => {
+  test.each([
+    ['0.4.1', '>=0.3.2', true],
+    ['bda4882a65349ca359216b135896bddc1d92461c', '>0.1.0', false],
+    ['f117971', '>0.6.0', true]
+  ])('given %p', async (version, range, expected) => {
+    expect(buildx.satisfies(version, range)).toBe(expected);
   });
 });
 
@@ -55,7 +81,7 @@ describe('inspect', () => {
         silent: true
       })
       .then(res => {
-        return !res.stdout.includes(' ') && res.exitCode == 0;
+        return !res.stdout.trim().includes(' ') && res.exitCode == 0;
       });
   }
   (isDaemonRunning() ? it : it.skip)(
@@ -72,6 +98,20 @@ describe('inspect', () => {
   );
 });
 
+describe('build', () => {
+  const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'setup-buildx-'));
+  it.skip('builds refs/pull/648/head', async () => {
+    const buildxBin = await buildx.build('https://github.com/docker/buildx.git#refs/pull/648/head', tmpDir);
+    console.log(buildxBin);
+    expect(fs.existsSync(buildxBin)).toBe(true);
+  }, 100000);
+  it.skip('builds 67bd6f4dc82a9cd96f34133dab3f6f7af803bb14', async () => {
+    const buildxBin = await buildx.build('https://github.com/docker/buildx.git#67bd6f4dc82a9cd96f34133dab3f6f7af803bb14', tmpDir);
+    console.log(buildxBin);
+    expect(fs.existsSync(buildxBin)).toBe(true);
+  }, 100000);
+});
+
 describe('install', () => {
   const tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'setup-buildx-'));
   it('acquires v0.4.1 version of buildx', async () => {
@@ -85,3 +125,37 @@ describe('install', () => {
     expect(fs.existsSync(buildxBin)).toBe(true);
   }, 100000);
 });
+
+describe('getConfig', () => {
+  test.each([
+    ['debug = true', false, 'debug = true', false],
+    [`notfound.toml`, true, '', true],
+    [
+      `${path.join(__dirname, 'fixtures', 'buildkitd.toml').split(path.sep).join(path.posix.sep)}`,
+      true,
+      `debug = true
+[registry."docker.io"]
+  mirrors = ["mirror.gcr.io"]
+`,
+      false
+    ]
+  ])('given %p config', async (val, file, exValue, invalid) => {
+    try {
+      let config: string;
+      if (file) {
+        config = await buildx.getConfigFile(val);
+      } else {
+        config = await buildx.getConfigInline(val);
+      }
+      expect(true).toBe(!invalid);
+      console.log(`config: ${config}`);
+      expect(config).toEqual(`${tmpNameSync}`);
+      const configValue = await fs.readFileSync(tmpNameSync, 'utf-8');
+      console.log(`configValue: ${configValue}`);
+      expect(configValue).toEqual(exValue);
+    } catch (err) {
+      console.log(err);
+      expect(true).toBe(invalid);
+    }
+  });
+});

__tests__/context.test.ts

@@ -1,6 +1,20 @@
+import * as fs from 'fs';
 import * as os from 'os';
+import * as path from 'path';
 import * as context from '../src/context';
 
+jest.spyOn(context, 'tmpDir').mockImplementation((): string => {
+  const tmpDir = path.join('/tmp/.docker-setup-buildx-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 path.join('/tmp/.docker-setup-buildx-jest', '.tmpname-jest').split(path.sep).join(path.posix.sep);
+});
+
 describe('getInputList', () => {
   it('handles single line correctly', async () => {
     await setInput('foo', 'bar');

__tests__/fixtures/buildkitd.toml

@@ -0,0 +1,3 @@
+debug = true
+[registry."docker.io"]
+  mirrors = ["mirror.gcr.io"]

__tests__/git.test.ts

@@ -0,0 +1,9 @@
+import * as git from '../src/git';
+
+describe('git', () => {
+  it('returns git remote ref', async () => {
+    const ref: string = await git.getRemoteSha('https://github.com/docker/buildx.git', 'refs/pull/648/head');
+    console.log(`ref: ${ref}`);
+    expect(ref).toEqual('f11797113e5a9b86bd976329c5dbb8a8bfdfadfa');
+  });
+});

__tests__/util.test.ts

@@ -0,0 +1,11 @@
+import * as util from '../src/util';
+
+describe('isValidUrl', () => {
+  test.each([
+    ['https://github.com/docker/buildx.git', true],
+    ['https://github.com/docker/buildx.git#refs/pull/648/head', true],
+    ['v0.4.1', false]
+  ])('given %p', async (url, expected) => {
+    expect(util.isValidUrl(url)).toEqual(expected);
+  });
+});

action.yml

@@ -35,6 +35,9 @@ inputs:
   config:
     description: 'BuildKit config file'
     required: false
+  config-inline:
+    description: 'Inline BuildKit config'
+    required: false
 
 outputs:
   name:

codecov.yml

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

hack/test.Dockerfile

@@ -1,5 +1,10 @@
 # syntax=docker/dockerfile:1.2
 ARG NODE_VERSION
+ARG DOCKER_VERSION=20.10.7
+ARG BUILDX_VERSION=0.6.0
+
+FROM docker:${DOCKER_VERSION} as docker
+FROM docker/buildx-bin:${BUILDX_VERSION} as buildx
 
 FROM node:${NODE_VERSION}-alpine AS base
 RUN apk add --no-cache git
@@ -15,8 +20,8 @@ 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=crazymax/docker,source=/usr/libexec/docker/cli-plugins/docker-buildx,target=/usr/libexec/docker/cli-plugins/docker-buildx \
+  --mount=type=bind,from=docker,source=/usr/local/bin/docker,target=/usr/bin/docker \
-  --mount=type=bind,from=crazymax/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

package.json

@@ -27,11 +27,12 @@
   ],
   "license": "Apache-2.0",
   "dependencies": {
-    "@actions/core": "^1.4.0",
+    "@actions/core": "^1.5.0",
     "@actions/exec": "^1.1.0",
     "@actions/http-client": "^1.0.11",
     "@actions/tool-cache": "^1.7.1",
     "semver": "^7.3.5",
+    "tmp": "^0.2.1",
     "uuid": "^8.3.2"
   },
   "devDependencies": {

src/buildx.ts

@@ -3,6 +3,7 @@ import * as path from 'path';
 import * as semver from 'semver';
 import * as util from 'util';
 import * as context from './context';
+import * as git from './git';
 import * as github from './github';
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
@@ -18,6 +19,28 @@ export type Builder = {
   node_platforms?: string;
 };
 
+export async function getConfigInline(s: string): Promise<string> {
+  return getConfig(s, false);
+}
+
+export async function getConfigFile(s: string): Promise<string> {
+  return getConfig(s, true);
+}
+
+export async function getConfig(s: string, file: boolean): Promise<string> {
+  if (file) {
+    if (!fs.existsSync(s)) {
+      throw new Error(`config file ${s} not found`);
+    }
+    s = fs.readFileSync(s, {encoding: 'utf-8'});
+  }
+  const configFile = context.tmpNameSync({
+    tmpdir: context.tmpDir()
+  });
+  fs.writeFileSync(configFile, s);
+  return configFile;
+}
+
 export async function isAvailable(): Promise<Boolean> {
   return await exec
     .getExecOutput('docker', ['buildx'], {
@@ -42,16 +65,20 @@ export async function getVersion(): Promise<string> {
       if (res.stderr.length > 0 && res.exitCode != 0) {
         throw new Error(res.stderr.trim());
       }
-      return parseVersion(res.stdout);
+      return parseVersion(res.stdout.trim());
     });
 }
 
-export async function parseVersion(stdout: string): Promise<string> {
+export function parseVersion(stdout: string): string {
-  const matches = /\sv?([0-9.]+)/.exec(stdout);
+  const matches = /\sv?([0-9a-f]{7}|[0-9.]+)/.exec(stdout);
   if (!matches) {
     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;
 }
 
 export async function inspect(name: string): Promise<Builder> {
@@ -106,6 +133,39 @@ export async function inspect(name: string): Promise<Builder> {
     });
 }
 
+export async function build(inputBuildRef: string, dockerConfigHome: string): Promise<string> {
+  let [repo, ref] = inputBuildRef.split('#');
+  if (ref.length == 0) {
+    ref = 'master';
+  }
+
+  let vspec: string;
+  if (ref.match(/^[0-9a-fA-F]{40}$/)) {
+    vspec = ref;
+  } else {
+    vspec = await git.getRemoteSha(repo, ref);
+  }
+  core.debug(`Tool version spec ${vspec}`);
+
+  let toolPath: string;
+  toolPath = tc.find('buildx', vspec);
+  if (!toolPath) {
+    const outFolder = path.join(context.tmpDir(), 'out').split(path.sep).join(path.posix.sep);
+    toolPath = await exec
+      .getExecOutput('docker', ['buildx', 'build', '--target', 'binaries', '--build-arg', 'BUILDKIT_CONTEXT_KEEP_GIT_DIR=1', '--output', `type=local,dest=${outFolder}`, inputBuildRef], {
+        ignoreReturnCode: true
+      })
+      .then(res => {
+        if (res.stderr.length > 0 && res.exitCode != 0) {
+          core.warning(res.stderr.trim());
+        }
+        return tc.cacheFile(`${outFolder}/buildx`, context.osPlat == 'win32' ? 'docker-buildx.exe' : 'docker-buildx', 'buildx', vspec);
+      });
+  }
+
+  return setPlugin(toolPath, dockerConfigHome);
+}
+
 export async function install(inputVersion: string, dockerConfigHome: string): Promise<string> {
   const release: github.GitHubRelease | null = await github.getRelease(inputVersion);
   if (!release) {
@@ -124,6 +184,10 @@ export async function install(inputVersion: string, dockerConfigHome: string): P
     toolPath = await download(version);
   }
 
+  return setPlugin(toolPath, dockerConfigHome);
+}
+
+async function setPlugin(toolPath: string, dockerConfigHome: string): Promise<string> {
   const pluginsDir: string = path.join(dockerConfigHome, 'cli-plugins');
   core.debug(`Plugins dir is ${pluginsDir}`);
   if (!fs.existsSync(pluginsDir)) {
@@ -143,11 +207,7 @@ export async function install(inputVersion: string, dockerConfigHome: string): P
 
 async function download(version: string): Promise<string> {
   const targetFile: string = context.osPlat == 'win32' ? 'docker-buildx.exe' : 'docker-buildx';
-  const downloadUrl = util.format(
+  const downloadUrl = util.format('https://github.com/docker/buildx/releases/download/v%s/%s', version, await filename(version));
-    'https://github.com/docker/buildx/releases/download/v%s/%s',
-    version,
-    await filename(version)
-  );
   let downloadPath: string;
 
   try {
@@ -196,21 +256,21 @@ export async function getBuildKitVersion(containerID: string): Promise<string> {
     .then(bkitimage => {
       if (bkitimage.exitCode == 0 && bkitimage.stdout.length > 0) {
         return exec
-          .getExecOutput(`docker`, ['run', '--rm', bkitimage.stdout, '--version'], {
+          .getExecOutput(`docker`, ['run', '--rm', bkitimage.stdout.trim(), '--version'], {
             ignoreReturnCode: true,
             silent: true
           })
           .then(bkitversion => {
             if (bkitversion.exitCode == 0 && bkitversion.stdout.length > 0) {
-              return `${bkitimage.stdout} => ${bkitversion.stdout}`;
+              return `${bkitimage.stdout.trim()} => ${bkitversion.stdout.trim()}`;
             } else if (bkitversion.stderr.length > 0) {
               core.warning(bkitversion.stderr.trim());
             }
-            return bkitversion.stdout;
+            return bkitversion.stdout.trim();
           });
       } else if (bkitimage.stderr.length > 0) {
         core.warning(bkitimage.stderr.trim());
       }
-      return bkitimage.stdout;
+      return bkitimage.stdout.trim();
     });
 }

src/context.ts

@@ -1,10 +1,25 @@
+import fs from 'fs';
 import * as os from 'os';
+import path from 'path';
+import * as tmp from 'tmp';
 import * as core from '@actions/core';
 import {issueCommand} from '@actions/core/lib/command';
 
+let _tmpDir: string;
 export const osPlat: string = os.platform();
 export const osArch: string = os.arch();
 
+export function tmpDir(): string {
+  if (!_tmpDir) {
+    _tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'docker-setup-buildx-')).split(path.sep).join(path.posix.sep);
+  }
+  return _tmpDir;
+}
+
+export function tmpNameSync(options?: tmp.TmpNameOptions): string {
+  return tmp.tmpNameSync(options);
+}
+
 export interface Inputs {
   version: string;
   driver: string;
@@ -14,6 +29,7 @@ export interface Inputs {
   use: boolean;
   endpoint: string;
   config: string;
+  configInline: string;
 }
 
 export async function getInputs(): Promise<Inputs> {
@@ -21,13 +37,12 @@ export async function getInputs(): Promise<Inputs> {
     version: core.getInput('version'),
     driver: core.getInput('driver') || 'docker-container',
     driverOpts: await getInputList('driver-opts', true),
-    buildkitdFlags:
+    buildkitdFlags: core.getInput('buildkitd-flags') || '--allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host',
-      core.getInput('buildkitd-flags') ||
-      '--allow-insecure-entitlement security.insecure --allow-insecure-entitlement network.host',
     install: core.getBooleanInput('install'),
     use: core.getBooleanInput('use'),
     endpoint: core.getInput('endpoint'),
-    config: core.getInput('config')
+    config: core.getInput('config'),
+    configInline: core.getInput('config-inline')
   };
 }
 
@@ -39,10 +54,7 @@ export async function getInputList(name: string, ignoreComma?: boolean): Promise
   return items
     .split(/\r?\n/)
     .filter(x => x)
-    .reduce<string[]>(
+    .reduce<string[]>((acc, line) => acc.concat(!ignoreComma ? line.split(',').filter(x => x) : line).map(pat => pat.trim()), []);
-      (acc, line) => acc.concat(!ignoreComma ? line.split(',').filter(x => x) : line).map(pat => pat.trim()),
-      []
-    );
 }
 
 export const asyncForEach = async (array, callback) => {

src/git.ts

@@ -0,0 +1,19 @@
+import * as exec from '@actions/exec';
+
+export async function getRemoteSha(repo: string, ref: string): Promise<string> {
+  return await exec
+    .getExecOutput(`git`, ['ls-remote', repo, ref], {
+      ignoreReturnCode: true,
+      silent: true
+    })
+    .then(res => {
+      if (res.stderr.length > 0 && res.exitCode != 0) {
+        throw new Error(res.stderr);
+      }
+      const [rsha, rref] = res.stdout.trim().split(/[\s\t]/);
+      if (rsha.length == 0) {
+        throw new Error(`Cannot find remote ref for ${repo}#${ref}`);
+      }
+      return rsha;
+    });
+}

src/main.ts

@@ -1,9 +1,9 @@
 import * as os from 'os';
 import * as path from 'path';
-import * as semver from 'semver';
 import * as buildx from './buildx';
 import * as context from './context';
 import * as stateHelper from './state-helper';
+import * as util from './util';
 import * as core from '@actions/core';
 import * as exec from '@actions/exec';
 
@@ -17,8 +17,12 @@ async function run(): Promise<void> {
     const inputs: context.Inputs = await context.getInputs();
     const dockerConfigHome: string = process.env.DOCKER_CONFIG || path.join(os.homedir(), '.docker');
 
-    if (!(await buildx.isAvailable()) || inputs.version) {
+    if (util.isValidUrl(inputs.version)) {
-      core.startGroup(`Installing buildx`);
+      core.startGroup(`Build and install buildx`);
+      await buildx.build(inputs.version, dockerConfigHome);
+      core.endGroup();
+    } else if (!(await buildx.isAvailable()) || inputs.version) {
+      core.startGroup(`Download and install buildx`);
       await buildx.install(inputs.version || 'latest', dockerConfigHome);
       core.endGroup();
     }
@@ -31,7 +35,7 @@ async function run(): Promise<void> {
     if (inputs.driver !== 'docker') {
       core.startGroup(`Creating a new builder instance`);
       let createArgs: Array<string> = ['buildx', 'create', '--name', builderName, '--driver', inputs.driver];
-      if (semver.satisfies(buildxVersion, '>=0.3.0')) {
+      if (buildx.satisfies(buildxVersion, '>=0.3.0')) {
         await context.asyncForEach(inputs.driverOpts, async driverOpt => {
           createArgs.push('--driver-opt', driverOpt);
         });
@@ -46,14 +50,16 @@ async function run(): Promise<void> {
         createArgs.push(inputs.endpoint);
       }
       if (inputs.config) {
-        createArgs.push('--config', inputs.config);
+        createArgs.push('--config', await buildx.getConfigFile(inputs.config));
+      } else if (inputs.configInline) {
+        createArgs.push('--config', await buildx.getConfigInline(inputs.configInline));
       }
       await exec.exec('docker', createArgs);
       core.endGroup();
 
       core.startGroup(`Booting builder`);
       let bootstrapArgs: Array<string> = ['buildx', 'inspect', '--bootstrap'];
-      if (semver.satisfies(buildxVersion, '>=0.4.0')) {
+      if (buildx.satisfies(buildxVersion, '>=0.4.0')) {
         bootstrapArgs.push('--builder', builderName);
       }
       await exec.exec('docker', bootstrapArgs);

src/util.ts

@@ -0,0 +1,8 @@
+export function isValidUrl(url: string): boolean {
+  try {
+    new URL(url);
+  } catch (e) {
+    return false;
+  }
+  return true;
+}

yarn.lock

@@ -2,10 +2,10 @@
 # yarn lockfile v1
 
 
-"@actions/core@^1.2.6", "@actions/core@^1.4.0":
+"@actions/core@^1.2.6", "@actions/core@^1.5.0":
-  version "1.4.0"
+  version "1.5.0"
-  resolved "https://registry.yarnpkg.com/@actions/core/-/core-1.4.0.tgz#cf2e6ee317e314b03886adfeb20e448d50d6e524"
+  resolved "https://registry.yarnpkg.com/@actions/core/-/core-1.5.0.tgz#885b864700001a1b9a6fba247833a036e75ad9d3"
-  integrity sha512-CGx2ilGq5i7zSLgiiGUtBCxhRRxibJYU6Fim0Q1Wg2aQL2LTnF27zbqZOrxfvFQ55eSBW0L8uVStgtKMpa0Qlg==
+  integrity sha512-eDOLH1Nq9zh+PJlYLqEMkS/jLQxhksPNmUGNBHfa4G+tQmnIhzpctxmchETtVGyBOvXgOVVpYuE40+eS4cUnwQ==
 
 "@actions/exec@^1.0.0", "@actions/exec@^1.1.0":
   version "1.1.0"
@@ -3253,6 +3253,13 @@ throat@^5.0.0:
   resolved "https://registry.yarnpkg.com/throat/-/throat-5.0.0.tgz#c5199235803aad18754a667d659b5e72ce16764b"
   integrity sha512-fcwX4mndzpLQKBS1DVYhGAcYaYt7vsHNIvQV+WXMvnow5cgjPphq5CaayLaGsjRdSCKZFNGt7/GYAuXaNOiYCA==
 
+tmp@^0.2.1:
+  version "0.2.1"
+  resolved "https://registry.yarnpkg.com/tmp/-/tmp-0.2.1.tgz#8457fc3037dcf4719c251367a1af6500ee1ccf14"
+  integrity sha512-76SUhtfqR2Ijn+xllcI5P1oyannHNHByD80W1q447gU3mp9G9PSpGdWmjUOHRDPiHYacIk66W7ubDTuPF3BEtQ==
+  dependencies:
+    rimraf "^3.0.0"
+
 tmpl@1.0.x:
   version "1.0.4"
   resolved "https://registry.yarnpkg.com/tmpl/-/tmpl-1.0.4.tgz#23640dd7b42d00433911140820e5cf440e521dd1"