build-and-tag.yaml

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# this work for additional information regarding copyright ownership.
# The ASF licenses this file to You under the Apache License, Version 2.0
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#     http://www.apache.org/licenses/LICENSE-2.0
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name: build-and-tag

# This workflow builds (if necessary) and tags the Docker image.
# Images are tagged by extracting the version from branch name:
#   ozone-X.Y -> X.Y

on:
  push:
    branches:
      - 'ozone-**'

permissions:
  contents: read
  packages: write

jobs:
  build:
    uses: ./.github/workflows/build.yaml

  tag:
    needs: build
    runs-on: ubuntu-latest
    env:
      DOCKERHUB_USER: ${{ secrets.DOCKERHUB_USER }}
      IMAGE_ID: ${{ needs.build.outputs.image-id }}
      REGISTRIES: ghcr.io # docker.io is appended dynamically
    steps:
      - name: Generate tags
        uses: docker/metadata-action@8e5442c4ef9f78752691e2d8f8d19755c6f78e81
        with:
          images: |
            ${{ github.repository_owner }}/ozone
          tags: |
            type=match,pattern=ozone-(.*),value={{branch}},group=1
          flavor: |
            latest=false

      - name: Add Docker Hub to targets
        if: ${{ env.DOCKERHUB_USER }}
        run: |
          echo "REGISTRIES=${{ env.REGISTRIES }} docker.io" >> $GITHUB_ENV

      - name: Pull image
        run: |
          docker pull "$IMAGE_ID"

      - name: Login to GitHub Container Registry
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567
        with:
          registry: ghcr.io
          username: ${{ github.repository_owner }}
          password: ${{ secrets.GITHUB_TOKEN }}

      - name: Login to Docker Hub
        if: ${{ env.DOCKERHUB_USER }}
        uses: docker/login-action@9780b0c442fbb1117ed29e0efdff1e18412f7567
        with:
          username: ${{ env.DOCKERHUB_USER }}
          password: ${{ secrets.DOCKERHUB_TOKEN }}

      - name: Apply tags to existing image
        run: |
          set -x
          for registry in $REGISTRIES; do
            opts="$(echo "$DOCKER_METADATA_OUTPUT_TAGS" | sed "s@^@--tag $registry/@g" | xargs echo)"
            if [[ -n "$opts" ]]; then
              docker buildx imagetools create $opts "$IMAGE_ID"
            fi
          done