list-targets

About

This subaction generates a list of Bake targets that can be used in a GitHub matrix, so you can distribute your builds across multiple runners.

---

• Usage
• Customizing
  • inputs
  • outputs

Usage

# docker-bake.hcl
group "validate" {
  targets = ["lint", "doctoc"]
}

target "lint" {
  target = "lint"
}

target "doctoc" {
  target = "doctoc"
}

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 }}

Customizing

inputs

Name	Type	Description
workdir	String	Working directory to use (defaults to .)
files	List/CSV	List of bake definition files
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