- uses: actions/attest-sbom@v2
  with:
    # Path to the artifact serving as the subject of the attestation. Must
    # specify exactly one of "subject-path" or "subject-digest". May contain a
    # glob pattern or list of paths (total subject count cannot exceed 1024).
    subject-path:

    # SHA256 digest of the subject for the attestation. Must be in the form
    # "sha256:hex_digest" (e.g. "sha256:abc123..."). Must specify exactly one
    # of "subject-path" or "subject-digest".
    subject-digest:

    # Subject name as it should appear in the attestation. Required unless
    # "subject-path" is specified, in which case it will be inferred from the
    # path.
    subject-name:

    # Path to the JSON-formatted SBOM file to attest. File size cannot exceed
    # 16MB.
    sbom-path:

    # Whether to push the attestation to the image registry. Requires that the
    # "subject-name" parameter specify the fully-qualified image name and that
    # the "subject-digest" parameter be specified. Defaults to false.
    push-to-registry:

    # Whether to attach a list of generated attestations to the workflow run
    # summary page. Defaults to true.
    show-summary:

    # The GitHub token used to make authenticated API requests. Default is
    # ${{ github.token }}
    github-token:

name: build-attest

on:
  workflow_dispatch:

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      id-token: write
      contents: read
      attestations: write

    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Build artifact
        run: make my-app
      - name: Generate SBOM
        uses: anchore/sbom-action@v0
        with:
          format: 'spdx-json'
          output-file: 'sbom.spdx.json'
      - name: Attest
        uses: actions/attest-sbom@v2
        with:
          subject-path: '${{ github.workspace }}/my-app'
          sbom-path: 'sbom.spdx.json'

- uses: actions/attest-sbom@v2
  with:
    subject-path: 'dist/**/my-bin-*'
    sbom-path: '${{ github.workspace }}/my-bin.sbom.spdx.json'

- uses: actions/attest-sbom@v2
  with:
    subject-path: 'dist/foo, dist/bar'

- uses: actions/attest-sbom@v2
  with:
    subject-path: |
      dist/foo
      dist/bar

name: build-attested-image

on:
  push:
    branches: [main]

jobs:
  build:
    runs-on: ubuntu-latest
    permissions:
      id-token: write
      packages: write
      contents: read
      attestations: write
    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: ${{ github.repository }}

    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Build and push image
        id: push
        uses: docker/build-push-action@v5.0.0
        with:
          context: .
          push: true
          tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
      - name: Generate SBOM
        uses: anchore/sbom-action@v0
        with:
          image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:latest
          format: 'cyclonedx-json'
          output-file: 'sbom.cyclonedx.json'
      - name: Attest
        uses: actions/attest-sbom@v2
        id: attest
        with:
          subject-name: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          subject-digest: ${{ steps.push.outputs.digest }}
          sbom-path: 'sbom.cyclonedx.json'
          push-to-registry: true