git context support

Signed-off-by: CrazyMax <1951866+crazy-max@users.noreply.github.com>

.github/workflows/ci.yml

@@ -398,3 +398,22 @@ jobs:
  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}}"

README.md

@@ -14,6 +14,8 @@ as a high-level build command.
 ___
 
 * [Usage](#usage)
+ * [Default](#default)
+ * [Git context](#git-context)
 * [Customizing](#customizing)
  * [inputs](#inputs)
  * [outputs](#outputs)
@@ -23,6 +25,8 @@ ___
 
 ## Usage
 
+### Default
+
 ```yaml
 name: ci
 
@@ -54,6 +58,46 @@ jobs:
  push: true
 ```
 
+### Git context
+
+By default, this action will use the local bake definition, so you need to
+use the [`actions/checkout`](https://github.com/actions/checkout/) action to
+check out the repository.
+
+If you want to use a remote bake definition, you can use the `source` input
+to specify a remote bake definition to use. Default Git context can be provided
+using the [Handlebars template](https://handlebarsjs.com/guide/) expression
+`{{defaultContext}}`:
+
+```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@v4
+ with:
+ source: "{{defaultContext}}"
+ push: true
+```
+
 ## Customizing
 
 ### inputs

package.json

@@ -27,7 +27,8 @@
  "license": "Apache-2.0",
  "dependencies": {
  "@actions/core": "^1.10.1",
- "@docker/actions-toolkit": "^0.14.0"
+ "@docker/actions-toolkit": "^0.14.0",
+ "handlebars": "^4.7.8"
  },
  "devDependencies": {
  "@types/node": "^20.5.9",

src/context.ts

@@ -1,5 +1,7 @@
 import * as core from '@actions/core';
+import * as handlebars from 'handlebars';
 import {Bake} from '@docker/actions-toolkit/lib/buildx/bake';
+import {Context} from '@docker/actions-toolkit/lib/context';
 import {Inputs as BuildxInputs} from '@docker/actions-toolkit/lib/buildx/inputs';
 import {GitHub} from '@docker/actions-toolkit/lib/github';
 import {Toolkit} from '@docker/actions-toolkit/lib/toolkit';
@@ -48,8 +50,11 @@ export async function getArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<s
 
 async function getBakeArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<string>> {
  const args: Array<string> = ['bake'];
- if (inputs.source) {
- args.push(inputs.source);
+ const source = handlebars.compile(inputs.source)({
+ defaultContext: Context.gitContext()
+ });
+ if (source) {
+ args.push(source);
  }
  await Util.asyncForEach(inputs.files, async file => {
  args.push('--file', file);
@@ -61,7 +66,7 @@ async function getBakeArgs(inputs: Inputs, toolkit: Toolkit): Promise<Array<stri
  args.push('--metadata-file', BuildxInputs.getBuildMetadataFilePath());
  }
  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);
+ const bakedef = await toolkit.bake.parseDefinitions([...inputs.files, 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)) {