main.yml

name: Publish Docker image

on:
  workflow_dispatch:
  release:
    types: [published]

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

env:
  # Use docker.io for Docker Hub if empty
  REGISTRY: ghcr.io
  # github.repository as <account>/<repo>
  ACCOUNT: tchapi

jobs:
  build:
    name: Build Docker images
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        image:
          - davis
          - davis-standalone
        platform:
          - linux/amd64
          - linux/arm64
        include:
          - image: davis
            dockerfile: docker/Dockerfile
          - image: davis-standalone
            dockerfile: docker/Dockerfile-standalone
    
    steps:
      - name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV
      
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Extract metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          context: git
          images: ${{ env.REGISTRY }}/${{ env.ACCOUNT }}/${{ matrix.image }}
          tags: type=raw,value=
      
      - name: Set up QEMU
        if: matrix.platform == 'linux/arm64'
        uses: docker/setup-qemu-action@v3
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          version: latest
      
      - 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 by digest
        id: build
        uses: docker/build-push-action@v6
        with:
          context: .
          file: ${{ matrix.dockerfile }}
          platforms: ${{ matrix.platform }}
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}
          annotations: ${{ steps.meta.outputs.annotations }}
          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.ACCOUNT }}/${{ matrix.image }},push-by-digest=true,name-canonical=true,push=true
          cache-from: type=gha,scope=${{ matrix.image }}-${{ env.PLATFORM_PAIR }}
          cache-to: type=gha,mode=max,scope=${{ matrix.image }}-${{ env.PLATFORM_PAIR }}
      
      - name: Export digest
        run: |
          mkdir -p /tmp/digests/
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"
      
      - name: Upload digest
        uses: actions/upload-artifact@v4
        with:
          name: digests-${{ matrix.image }}_${{ env.PLATFORM_PAIR }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1
      
      - name: Build summary
        run: |
          echo "### ✅ Build Complete" >> $GITHUB_STEP_SUMMARY
          echo "- **Image**: \`${{ matrix.image }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- **Platform**: \`${{ matrix.platform }}\`" >> $GITHUB_STEP_SUMMARY
          echo "- **Digest**: \`${{ steps.build.outputs.digest }}\`" >> $GITHUB_STEP_SUMMARY

  merge:
    name: Create merged manifest
    runs-on: ubuntu-latest
    strategy:
      fail-fast: false
      matrix:
        image:
          - davis
          - davis-standalone
    needs: build
    
    steps:
      - name: Checkout
        uses: actions/checkout@v4
      
      - name: Download digests
        uses: actions/download-artifact@v4
        with:
          path: /tmp/digests/${{ matrix.image }}/
          pattern: digests-${{ matrix.image }}_*
          merge-multiple: true
      
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        with:
          version: latest
      
      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          context: git
          images: ${{ env.REGISTRY }}/${{ env.ACCOUNT }}/${{ matrix.image }}
          tags: |
            type=semver,pattern={{version}}
            type=edge,branch=${{ github.ref_name }}
      
      - name: Login to GitHub Container Registry
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      
      - name: Create manifest list and push
        working-directory: /tmp/digests/${{ matrix.image }}/
        run: |
          docker buildx imagetools create \
            $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            --annotation index:org.opencontainers.image.created="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.created'] }}" \
            --annotation index:org.opencontainers.image.description="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.description'] }}" \
            --annotation index:org.opencontainers.image.version="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.version'] }}" \
            --annotation index:org.opencontainers.image.licenses="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.licenses'] }}" \
            --annotation index:org.opencontainers.image.title="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.title'] }}" \
            --annotation index:org.opencontainers.image.source="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.source'] }}" \
            --annotation index:org.opencontainers.image.url="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.url'] }}" \
            --annotation index:org.opencontainers.image.revision="${{ fromJSON(steps.meta.outputs.json).labels['org.opencontainers.image.revision'] }}" \
            $(printf '${{ env.REGISTRY }}/${{ env.ACCOUNT }}/${{ matrix.image }}@sha256:%s ' *)
      
      - name: Inspect image
        run: |
          docker buildx imagetools inspect \
            ${{ env.REGISTRY }}/${{ env.ACCOUNT }}/${{ matrix.image }}:${{ steps.meta.outputs.version }}