publish-containers.yml

name: Publish container image to GHCR

on:
  release:
    types:
      - created

env:
  REGISTRY: ghcr.io
  IMAGE_NAME: ${{ github.repository }}

jobs:
  build-n-push-digest:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write

    strategy:
      fail-fast: false
      matrix:
        platform:
          - linux/arm64
          - linux/amd64

    steps:
      - name: Prepare
        run: |
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Checkout repository
        uses: actions/checkout@v4

      - name: Extract container metadata
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
        env:
          DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index

      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

      - name: Setup Docker buildx
        uses: docker/setup-buildx-action@v3

      - name: Login to image registry ${{ env.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: .
          push: true
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          annotations: ${{ steps.meta.outputs.annotations }}
          provenance: mode=max
          sbom: true
          outputs: type=image,name=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }},push-by-digest=true,name-canonical=true,"annotation-index.org.opencontainers.image.description=Container image that contains unoserver and LibreOffice incl a large set of fonts for file format conversions"
        env:
          DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index

      - 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-${{ env.PLATFORM_PAIR }}
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1

  merge:
    runs-on: ubuntu-latest
    needs:
      - build-n-push-digest
    steps:
      - 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
        with:
          buildkitd-flags: --debug

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            type=schedule
            type=ref,event=branch
            type=ref,event=pr
            type=semver,pattern={{version}}
          annotations: |
            org.opencontainers.image.description=Container image that contains unoserver and libreoffice including large set of fonts for file format conversions
            org.opencontainers.image.licenses=MIT
            org.opencontainers.image.source=https://github.com/unoconv/unoserver-docker
        env:
          DOCKER_METADATA_ANNOTATIONS_LEVELS: manifest,index

      - name: Login to image registry ${{ env.REGISTRY }}
        uses: docker/login-action@v3
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Debug info 1
        working-directory: /tmp/digests
        run: ls -la

      - name: Debug info 2
        working-directory: /tmp/digests
        run: |
          echo "Listing files in the directory and outputting their contents:"

          # Define the directory path
          DIRECTORY_PATH=.

          # List files in the directory and save to file_list.txt
          ls -la $DIRECTORY_PATH > file_list.txt

          # Output content of each file and save to output.txt
          for file in $(ls $DIRECTORY_PATH); do
            echo "Contents of $DIRECTORY_PATH/$file:" >> output.txt
            echo "$DIRECTORY_PATH/$file:" >> output.txt
            cat $DIRECTORY_PATH/$file >> output.txt
            echo "\n\n" >> output.txt
          done

      - name: Create manifest list and push
        working-directory: /tmp/digests
        run: |
          docker buildx imagetools create \
            $(echo $DOCKER_METADATA_OUTPUT_JSON | jq -cr '.tags | map("-t " + .) | join(" ")') \
            $(echo $DOCKER_METADATA_OUTPUT_JSON | jq -r '.annotations | map("--annotation \"" + . + "\"") | join(" ")') \
            $(printf '${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}@sha256:%s ' *)

      - name: Inspect image
        run: |
          docker buildx imagetools inspect ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:${{ steps.meta.outputs.version }}