build-agent.yml

name: ci-agent

on:
  push:

env:
  REGISTRY_IMAGE: rocketadmin/rocketadmin-agent

jobs:
  prepare:
    runs-on: ubuntu-latest
    outputs:
      matrix: ${{ steps.platforms.outputs.matrix }}
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      - name: Create matrix
        id: platforms
        run: |
          echo "matrix=$(docker buildx bake image-all -f docker-bake-agent.hcl --print | jq -cr '.target."image-all".platforms')" >>${GITHUB_OUTPUT}

      - name: Show matrix
        run: |
          echo ${{ steps.platforms.outputs.matrix }}

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}

      - name: Rename meta bake definition file
        run: |
          mv "${{ steps.meta.outputs.bake-file }}" "/tmp/bake-meta.json"

      - name: Upload meta bake definition
        uses: actions/upload-artifact@v4
        with:
          name: bake-meta
          path: /tmp/bake-meta.json
          if-no-files-found: error
          retention-days: 1

  build:
    permissions:
      id-token: write
      contents: read
      attestations: write
    runs-on: ${{ contains(matrix.platform, 'arm') && 'arm64' || 'ubuntu-latest' }}
    needs: prepare
    strategy:
      fail-fast: false
      matrix:
        platform: ${{ fromJson(needs.prepare.outputs.matrix) }}
    steps:
      - name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Checkout
        uses: actions/checkout@v4

      - name: Download meta bake definition
        uses: actions/download-artifact@v4
        with:
          name: bake-meta
          path: /tmp

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to Docker Hub
        uses: docker/login-action@v3
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Build
        id: bake
        uses: docker/bake-action@v5
        with:
          sbom: true
          provenance: true
          files: |
            ./docker-bake-agent.hcl
            /tmp/bake-meta.json
          targets: image
          set: |
            *.tags=
            *.platform=${{ matrix.platform }}
            *.output=type=image,"name=${{ env.REGISTRY_IMAGE }}",push-by-digest=true,name-canonical=true,push=true

      - name: Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ fromJSON(steps.bake.outputs.metadata).image['containerimage.digest'] }}"
          touch "/tmp/digests/${digest#sha256:}"

      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ env.PLATFORM_PAIR }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

      - name: Attest Build Provenance
        uses: actions/attest-build-provenance@v2
        with:
          subject-digest: "${{ fromJSON(steps.bake.outputs.metadata).image['containerimage.digest'] }}"
          push-to-registry: false
          subject-name: ${{ env.REGISTRY_IMAGE }}

  merge:
    runs-on: ubuntu-latest
    permissions:
      id-token: write
      contents: read
      attestations: write
    needs:
      - build
    steps:
      - name: Download meta bake definition
        uses: actions/download-artifact@v4
        with:
          name: bake-meta
          path: /tmp

      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests
          pattern: digests-*
          merge-multiple: true

      - 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: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create $(jq -cr '.target."docker-metadata-action".tags | map(select(startswith("${{ env.REGISTRY_IMAGE }}")) | "-t " + .) | join(" ")' /tmp/bake-meta.json) \
            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)

      - name: Get merged manifest digest
        id: manifest
        run: |
          TAG=$(jq -r '.target."docker-metadata-action".args.DOCKER_META_VERSION' /tmp/bake-meta.json)
          DIGEST="sha256:$(docker buildx imagetools inspect "${{ env.REGISTRY_IMAGE }}:${TAG}" --raw | sha256sum | cut -d ' ' -f1)"
          echo "digest=${DIGEST}" >> $GITHUB_OUTPUT

      - name: Attest Merged Manifest Provenance
        uses: actions/attest-build-provenance@v2
        with:
          subject-digest: ${{ steps.manifest.outputs.digest }}
          subject-name: ${{ env.REGISTRY_IMAGE }}
          push-to-registry: false

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY_IMAGE }}:$(jq -r '.target."docker-metadata-action".args.DOCKER_META_VERSION' /tmp/bake-meta.json)