name: build & push the images

on:
  push:
    branches: [main]

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

jobs:
  build-and-push:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write

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

      - name: Set up QEMU (for multi-arch)
        uses: docker/setup-qemu-action@v3

      - name: Set up Docker Buildx
        uses: docker/setup-buildx-action@v3

      - name: Normalize image name to lowercase
        run: echo "IMAGE_NAME_LC=${IMAGE_NAME,,}" >> $GITHUB_ENV
        env:
          IMAGE_NAME: ${{ env.IMAGE_NAME }}

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

      - name: Build and push Docker image
        uses: docker/build-push-action@v5
        with:
          context: .
          file: ./Dockerfile
          push: true
          platforms: linux/amd64,linux/arm64
          cache-from: type=gha
          cache-to: type=gha,mode=max
          tags: |
            ${{ env.REGISTRY }}/${{ env.IMAGE_NAME_LC }}:latest
          labels: |
            org.opencontainers.image.source=${{ github.server_url }}/${{ github.repository }}

      - name: Output image info
        run: |
          echo "Image: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME_LC }}:latest"