codex-frontend/.github/workflows/docker-reusable.yml

name: Docker - Reusable


on:
  workflow_call:
    inputs:
      docker_file:
        default: docker/Dockerfile
        description: Dockerfile
        required: false
        type: string
      docker_repo:
        default: codexstorage/codex-frontend
        description: DockerHub repository
        required: false
        type: string
      tag_latest:
        default: true
        description: Set latest tag for Docker images
        required: false
        type: boolean
      tag_sha:
        default: true
        description: Set Git short commit as Docker tag
        required: false
        type: boolean
      tag_suffix:
        default: ''
        description: Suffix for Docker images tag
        required: false
        type: string


env:
  DOCKER_FILE: ${{ inputs.docker_file }}
  DOCKER_REPO: ${{ inputs.docker_repo }}
  TAG_LATEST: ${{ inputs.tag_latest }}
  TAG_SHA: ${{ inputs.tag_sha }}
  TAG_SUFFIX: ${{ inputs.tag_suffix }}


jobs:
  # Build platform specific image
  build:
    strategy:
      fail-fast: true
      matrix:
        target:
          - os: linux
            arch: amd64
          - os: linux
            arch: arm64
        include:
          - target:
              os: linux
              arch: amd64
            builder: ubuntu-22.04
          - target:
              os: linux
              arch: arm64
            builder: buildjet-4vcpu-ubuntu-2204-arm

    name: Build ${{ matrix.target.os }}/${{ matrix.target.arch }}
    runs-on: ${{ matrix.builder }}
    env:
      PLATFORM: ${{ format('{0}/{1}', 'linux', matrix.target.arch) }}
    steps:
      - name: Checkout
        uses: actions/checkout@v3

      - name: Docker - Meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.DOCKER_REPO }}

      - name: Docker - Set up Buildx
        uses: docker/setup-buildx-action@v2

      - name: Docker - Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Docker - Build and Push by digest
        id: build
        uses: docker/build-push-action@v4
        with:
          context: .
          file: ${{ env.DOCKER_FILE }}
          platforms: ${{ env.PLATFORM }}
          push: true
          labels: ${{ steps.meta.outputs.labels }}
          outputs: type=image,name=${{ env.DOCKER_REPO }},push-by-digest=true,name-canonical=true,push=true

      - name: Docker - Export digest
        run: |
          mkdir -p /tmp/digests
          digest="${{ steps.build.outputs.digest }}"
          touch "/tmp/digests/${digest#sha256:}"          

      - name: Docker - Upload digest
        uses: actions/upload-artifact@v3
        with:
          name: digests
          path: /tmp/digests/*
          if-no-files-found: error
          retention-days: 1


  # Publish multi-platform image
  publish:
    name: Publish multi-platform image
    runs-on: ubuntu-latest
    needs: build
    steps:
      - name: Docker - Variables
        run: |
          # Adjust custom suffix when set and
          if [[ -n "${{ env.TAG_SUFFIX }}" ]]; then
            echo "TAG_SUFFIX=-${{ env.TAG_SUFFIX }}" >>$GITHUB_ENV
          fi
          # Disable SHA tags on tagged release
          if [[ ${{ startsWith(github.ref, 'refs/tags/') }} == "true" ]]; then
            echo "TAG_SHA=false" >>$GITHUB_ENV
          fi
          # Handle latest and latest-custom using raw
          if [[ ${{ env.TAG_SHA }} == "false" ]]; then
            echo "TAG_LATEST=false" >>$GITHUB_ENV
            echo "TAG_RAW=true" >>$GITHUB_ENV
            if [[ -z "${{ env.TAG_SUFFIX }}" ]]; then
              echo "TAG_RAW_VALUE=latest" >>$GITHUB_ENV
            else
              echo "TAG_RAW_VALUE=latest-{{ env.TAG_SUFFIX }}" >>$GITHUB_ENV
            fi
          else
            echo "TAG_RAW=false" >>$GITHUB_ENV
          fi          

      - name: Docker - Download digests
        uses: actions/download-artifact@v3
        with:
          name: digests
          path: /tmp/digests

      - name: Docker - Set up Buildx
        uses: docker/setup-buildx-action@v2

      - name: Docker - Meta
        id: meta
        uses: docker/metadata-action@v4
        with:
          images: ${{ env.DOCKER_REPO }}
          flavor: |
            latest=${{ env.TAG_LATEST }}
            suffix=${{ env.TAG_SUFFIX }},onlatest=true            
          tags: |
            type=semver,pattern={{version}}
            type=raw,enable=${{ env.TAG_RAW }},value=latest
            type=sha,enable=${{ env.TAG_SHA }}            

      - name: Docker - Login to Docker Hub
        uses: docker/login-action@v2
        with:
          username: ${{ secrets.DOCKERHUB_USERNAME }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

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

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