main.yml

name: Build & Publish
on: push

jobs:
   build:
    name: Build
    runs-on: ubuntu-latest
    
    steps:
    - name: Checkout
      uses: actions/checkout@v4

    - name: Setup .NET Core SDK
      uses: actions/setup-dotnet@v3.2.0
      with:
        dotnet-version: 8.x
        
    - name: Build Project
      run: dotnet build --configuration Release -o Output
      
   publish:
    name: Publish to GitHub
    runs-on: ubuntu-latest
    needs: build
    if: ${{ !contains(github.event.head_commit.message, 'Update') }}

    steps:
    - name: Checkout
      uses: actions/checkout@v4
      
    - name: Docker Login      
      uses: docker/login-action@v3
      with:
        registry: ghcr.io
        username: ${{ github.repository_owner }}
        password: ${{ secrets.GITHUB_TOKEN }}
                
    - name: Normalize repository name
      id: norm_name
      run: |
         echo IMAGE_NAME=$(echo ${{ github.repository }} | tr '[:upper:]' '[:lower:]') >> $GITHUB_ENV
        
    - name: Build and push Docker images
      uses: docker/build-push-action@v5
      with:
        context: .
        push: true
        tags: |
          ghcr.io/${{ env.IMAGE_NAME }}:latest
          ghcr.io/${{ env.IMAGE_NAME }}:${{ github.run_number }}