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: Push Docker image with run number tag
        run: |
          docker push $CONTAINER_NAME:$MAJOR_VERSION.${{ github.run_number }}
      - name: Tag and push Docker image as latest if on master branch
        if: github.ref == 'refs/heads/master'
        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 }}