name: Docker

on:
  push:
    branches: [ master ]

jobs:
  build:
    runs-on: ubuntu-latest
    steps:
      - name: 'Checkout GitHub Action'
        uses: actions/checkout@v2
        
      - name: Login to DockerHub
        uses: docker/login-action@v1 
        with:
          username: ${{ secrets.REGISTRY_USERNAME }}
          password: ${{ secrets.REGISTRY_PASSWORD }}
      - name: Build and push docker
        uses: docker/build-push-action@v2
        with:
          push: true
          tag: latest