name: Base DNS Docker Image CI/CD Build
on:
  - push

jobs:
  build-docker-image:
    runs-on: main
    env:
      CONTAINER_NAME: "${{ vars.CONTAINER_REGISTRY_HOSTNAME }}/dns/base"
      MAJOR_VERSION: 0
    steps:
      - name: Check out repository code
        uses: actions/checkout@v4
      - name: Build Docker Image (with run number tag)
        run: |
          docker build \
          --tag $CONTAINER_NAME:$MAJOR_VERSION.${{ github.run_number }}  \
          --no-cache .
      - name: Build Docker Image (with run number tag)
        run: |
          docker push $CONTAINER_NAME:$MAJOR_VERSION.${{ github.run_number }}
      - name: Tag and Push `latest` Docker image (if main branch)
        if: ${{ github.ref }} == 'refs/heads/main'
        run: |
          docker tag $CONTAINER_NAME:$MAJOR_VERSION.${{ github.run_number }} $CONTAINER_NAME:latest
          docker push $CONTAINER_NAME:latest
      - name: Clean up Docker Images
        run: |
          docker rmi $CONTAINER_NAME:latest || true # Avoid failure if 'latest' tag does not exist
          docker rmi $CONTAINER_NAME:$MAJOR_VERSION.${{ github.run_number }}