publish-docker.yml

name: Publish Rhino Docker Images

on:
  schedule:
    - cron: "01 7 * * *"
    
  workflow_dispatch:
    inputs:
      vertag:
        description: 'Version Tag'
        required: false

env:
  INPUT_VERTAG: ${{ github.event.inputs.vertag }}
  REGISTRY: ghcr.io
  REGISTRY_IMAGE: ghcr.io/${{ github.repository_owner }}/docker

jobs:
  build:
    runs-on: ${{ matrix.runner }}
    strategy:
      fail-fast: false
      matrix:
        include:
          - runner: ubuntu-latest
            platform: linux/amd64
          - runner: buildjet-4vcpu-ubuntu-2204-arm
            platform: linux/arm64
    permissions:
      contents: read
      packages: write

    steps:
      - name: Checkout repository
        uses: actions/checkout@v4
      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3
        
      - name: Build Dockerfile
        run: |
          vertag=${{ env.INPUT_VERTAG }}
          ./rhino-docker-builder -f -a off -v ${vertag}
          echo "BUILT_DOCKFILE=$(ls Dockerfile.RhinoLinux*)"  >> $GITHUB_ENV
          if [[ -z ${vertag} ]]; then
            echo "DOCK_LABEL=$(date +%Y%m%d)"  >> $GITHUB_ENV
          else
            echo "DOCK_LABEL=${{ env.INPUT_VERTAG }}"  >> $GITHUB_ENV
          fi
          platform=${{ matrix.platform }}
          echo "PLATFORM_PAIR=${platform//\//-}" >> $GITHUB_ENV

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=raw,value=${{ env.DOCK_LABEL }}
          flavor: latest=true

      - name: Login to 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@v5
        with:
          context: .
          file: ./${{ env.BUILT_DOCKFILE }}
          platforms: ${{ matrix.platform }}
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ env.REGISTRY_IMAGE }},push-by-digest=true,name-canonical=true,push=true

      - 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]
    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:
          version: v0.12.0

      - name: Load tag
        run: |
          vertag=${{ env.INPUT_VERTAG }}
          if [[ -z ${vertag} ]]; then
            echo "DOCK_LABEL=$(date +%Y%m%d)"  >> $GITHUB_ENV
          else
            echo "DOCK_LABEL=${{ env.INPUT_VERTAG }}"  >> $GITHUB_ENV
          fi

      - name: Docker meta
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY_IMAGE }}
          tags: |
            type=raw,value=${{ env.DOCK_LABEL }}
          flavor: latest=true

      - name: Log into registry ${{ env.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
        run: |
          docker buildx imagetools create \
            --annotation "index:org.opencontainers.image.description=Contains a Rhino Linux server image for development." \
            $(jq -cr '.tags | map("-t " + .) | join(" ")' <<< "$DOCKER_METADATA_OUTPUT_JSON") \
            $(printf '${{ env.REGISTRY_IMAGE }}@sha256:%s ' *)          

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