docker-image.yml

name: Docker Image CI

on:
  push:
    branches: [ "dev" ]
  pull_request:
    branches: [ "dev" ]

jobs:

  build:

    runs-on: ubuntu-latest

    steps:
    - uses: actions/checkout@v3

    - name: Login to GitHub Container Registry
      uses: docker/login-action@v1
      with:
        registry: ghcr.io
        username: ${{ github.actor }}
        password: ${{ secrets.GITHUB_TOKEN }}

    - name: Build and push Docker image
      uses: docker/build-push-action@v2
      with:
        context: .
        push: true
        tags: |
          ghcr.io/${{ github.repository }}:${{ github.sha }}
        file: ./Dockerfile

    - name: Update latest tag on main branch
      if: github.ref == 'refs/heads/dev'
      run: |
        docker pull ghcr.io/${{ github.repository }}:${{ github.sha }}
        docker tag ghcr.io/${{ github.repository }}:${{ github.sha }} ghcr.io/${{ github.repository }}:latest
        docker push ghcr.io/${{ github.repository }}:latest