name: Publish Image in Docker Hub 

on:
  push:
    branches: [ master ]

jobs:

  build:
  
    runs-on: ubuntu-latest
    env:
        DOCKER_ORGANIZATION: ${{secrets.DOCKER_ORGANIZATION}}
        WEB_APP_VERSION: ${{secrets.WEB_APP_LATEST_STABLE_VERSION}}

    steps:
    - uses: actions/checkout@v2

    - name: Docker Hub Login
      env:
        DOCKER_USER: ${{secrets.DOCKER_USER}}
        DOCKER_PASSWORD: ${{secrets.DOCKER_PASSWORD}}
      run: |
        echo $DOCKER_PASSWORD | docker login -u $DOCKER_USER --password-stdin

    - name: Build the Docker image
      run: docker build -t web-app:latest .
      
    - name: Docker Hub Prepare
      run: docker image tag web-app $DOCKER_ORGANIZATION/web-app:$WEB_APP_VERSION

    - name: Docker Hub Push  
      run: docker image push $DOCKER_ORGANIZATION/web-app:$WEB_APP_VERSION