build-docker-images.yml

name: Build and Push Docker Images

on:
  push:
    branches: [develop, 'GEN*', 'gen*']
    paths:
      - 'scripts/references/**'
      - '.github/workflows/build-docker-images.yml'
  workflow_dispatch:

jobs:
  build_references_docker:
    runs-on: ubuntu-latest
    env:
      REGISTRY: ghcr.io
      IMAGE_NAME: ${{ github.repository }}
    permissions:
      contents: read
      packages: write

    steps:
    - name: Checkout repository
      uses: actions/checkout@v3
      with:
        fetch-depth: 2

    - name: Setup Docker buildx
      uses: docker/setup-buildx-action@v3

    - name: Fetch the default branch (develop) for comparison
      run: git fetch origin develop:refs/remotes/origin/develop --depth=1

    - name: Check for Changes in scripts/references
      id: check_changes
      run: |
        # Check for a merge base, fallback to root commit if none exists
        if git merge-base --is-ancestor origin/develop HEAD; then
          DIFF_BASE="origin/develop"
        else
          DIFF_BASE=$(git rev-list --max-parents=0 HEAD)  # Use the initial commit as fallback
        fi

        # Compare changes between DIFF_BASE and HEAD
        if git diff --name-only $DIFF_BASE -- scripts/references | grep -q .; then
          echo "CHANGED=true" >> $GITHUB_ENV
        else
          echo "CHANGED=false" >> $GITHUB_ENV
        fi

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

    - name: Build and Push Docker Image for scripts/references
      uses: docker/build-push-action@v5
      with:
        context: scripts/references
        push: true
        tags: ${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:references-${{ github.ref_name }}
        cache-from: type=registry,ref=${{ env.REGISTRY }}/${{ env.IMAGE_NAME }}:references-${{ github.ref_name }}-cache
        cache-to: type=inline,mode=max