name: Build docker containers
on:
  push:
    tags:
      - "v*"
jobs:
  release:
    runs-on: ubuntu-latest
    permissions:
      packages: write
    env:
      IMAGE_NAME: ghcr.io/${{ github.repository_owner }}/${{ github.event.repository.name }}
      VERSION: ${{ github.ref_name }}
    steps:
      - uses: actions/checkout@v4
      - name: Login to GHCR
        uses: docker/login-action@v3
        with:
          registry: ghcr.io
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      # Build per-arch images
      - name: Build amd64 image
        run: |
          docker build -t ${IMAGE_NAME}:${VERSION}-amd64 -f Dockerfile --build-arg ARCH=amd64 .
      - name: Build arm64 image
        run: |
          docker build -t ${IMAGE_NAME}:${VERSION}-arm64 -f Dockerfile --build-arg ARCH=arm64 .
      - name: Push per-arch images
        run: |
          docker push ${IMAGE_NAME}:${VERSION}-amd64
          docker push ${IMAGE_NAME}:${VERSION}-arm64
      # Create multi-arch manifest and push
      - name: Push multi-arch manifest
        run: |
          docker manifest create ${IMAGE_NAME}:${VERSION} \
            --amend ${IMAGE_NAME}:${VERSION}-amd64 \
            --amend ${IMAGE_NAME}:${VERSION}-arm64
          docker manifest push ${IMAGE_NAME}:${VERSION}
      - name: Tag as latest
        run: |
          docker manifest create ${IMAGE_NAME}:latest \
            --amend ${IMAGE_NAME}:${VERSION}-amd64 \
            --amend ${IMAGE_NAME}:${VERSION}-arm64
          docker manifest push ${IMAGE_NAME}:latest