name: Docker Image CI

on:
  push:
  pull_request:
    branches: ['main']

jobs:
  deploy:
    permissions:
      contents: read
      packages: write
      attestations: write
      id-token: write
    runs-on: ubuntu-latest
    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: ${{ github.repository }}
    if: github.ref == 'refs/heads/main'
    steps:
      - uses: actions/checkout@v3
        with:
          fetch-depth: 0
      - name: Login to Github Packages
        uses: docker/login-action@v1
        with:
          registry: ${{ env.REGISTRY }}
          username: ${{ github.actor }}
          password: ${{ secrets.GITHUB_TOKEN }}
      - name: Extract metadata for Docker
        id: meta
        uses: docker/metadata-action@v5
        with:
          images: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}
          tags: |
            # set latest tag for default branch
            type=raw,value=latest,enable={{is_default_branch}}
            type=semver,pattern={{version}}
      - name: Build and push
        id: push
        uses: docker/build-push-action@v3
        with:
          context: '.'
          file: 'Dockerfile'
          push: true
          pull: true
          tags: ${{ steps.meta.outputs.tags }}
          labels: ${{ steps.meta.outputs.labels }}