Add `config-inline` input

Signed-off-by: CrazyMax <crazy-max@users.noreply.github.com>

.github/dependabot.yml

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

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
@@ -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

@@ -6,6 +6,8 @@ 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)) {
@@ -14,6 +16,10 @@ jest.spyOn(context, 'tmpDir').mockImplementation((): string => {
   return tmpDir;
 });
 
+jest.spyOn(context, 'tmpNameSync').mockImplementation((): string => {
+  return tmpNameSync;
+});
+
 describe('isAvailable', () => {
   const execSpy: jest.SpyInstance = jest.spyOn(exec, 'getExecOutput');
   buildx.isAvailable();
@@ -119,3 +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

@@ -11,6 +11,10 @@ jest.spyOn(context, 'tmpDir').mockImplementation((): string => {
   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"]

action.yml

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

package.json

@@ -32,6 +32,7 @@
     "@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

@@ -19,6 +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'], {

src/context.ts

@@ -1,6 +1,7 @@
 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';
 
@@ -15,6 +16,10 @@ export function tmpDir(): string {
   return _tmpDir;
 }
 
+export function tmpNameSync(options?: tmp.TmpNameOptions): string {
+  return tmp.tmpNameSync(options);
+}
+
 export interface Inputs {
   version: string;
   driver: string;
@@ -24,6 +29,7 @@ export interface Inputs {
   use: boolean;
   endpoint: string;
   config: string;
+  configInline: string;
 }
 
 export async function getInputs(): Promise<Inputs> {
@@ -35,7 +41,8 @@ export async function getInputs(): Promise<Inputs> {
     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')
   };
 }
 

src/main.ts

@@ -50,7 +50,9 @@ 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();

yarn.lock

@@ -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"