name: Build branch

on:
  push:
    branches-ignore:
      - "main"
    tags-ignore:
      - "**"

env:
  REGISTRY: ghcr.io

jobs:
  build-and-push-image:
    runs-on: ubuntu-latest
    permissions:
      contents: read
      packages: write
      id-token: write
      attestations: write

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

      - name: Extract clean branch name
        id: extract_branch
        run: |
          echo "CLEAN_BRANCH_NAME=$(echo ${{ github.head_ref || github.ref_name }} | sed 's|.*/||')" >> $GITHUB_ENV
          echo "REGISTRY_LOWER=$(echo '${{ env.REGISTRY }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV
          echo "REPOSITORY_LOWER=$(echo '${{ github.repository }}' | tr '[:upper:]' '[:lower:]')" >> $GITHUB_ENV

      - name: Log in to the Container registry
        uses: docker/login-action@v3.1.0
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ github.token }}

      # Build Docker Images (amd64 and arm64)
      - name: Set up QEMU
        uses: docker/setup-qemu-action@v3

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

      - name: Build and push Docker image
        id: push
        uses: docker/build-push-action@v5.3.0
        with:
          context: .
          platforms: linux/amd64,linux/aarch64
          push: true
          tags: |
            ${{ env.REGISTRY_LOWER }}/${{ env.REPOSITORY_LOWER }}:${{ env.CLEAN_BRANCH_NAME }}
          labels: |
            branch=${{ env.CLEAN_BRANCH_NAME }}

      - name: Generate artifact attestation
        uses: actions/attest-build-provenance@v1.4.4
        with:
          subject-name: ${{ env.REGISTRY }}/${{ github.repository }}
          subject-digest: ${{ steps.push.outputs.digest }}
          push-to-registry: true