dockerimage.yml

name: Push Docker Image

on: 
  push: 
    branches:
      - master
  pull_request: 
    types: [ opened, synchronize, reopened ]

jobs:

  build:

    runs-on: ubuntu-latest

    steps:

    - name: Login into Registry
      uses: azure/docker-login@v1
      with:
        username: ${{ secrets.DOCKER_USERNAME }}
        password: ${{ secrets.DOCKER_PASSWORD }}

    - uses: actions/checkout@v2

    - name: Get Short SHA
      id: vars
      run: |
        echo ::set-output name=short_sha::$(git rev-parse --short=7 ${{ github.sha }})

    - name: Build the Docker image
      run: |
        docker build --build-arg APP_ENV=production \
             --build-arg RUBY_VERSION=2.6.5 \
             --build-arg PG_MAJOR=11 \
             --build-arg NODE_MAJOR=10 \
             --build-arg YARN_VERSION=1.13.0 \
             --build-arg BUNDLER_VERSION=2.1.3 \
             -t $GITHUB_REPOSITORY \
             .

    - name: Tag and Push Docker image
      run: |
        docker tag $GITHUB_REPOSITORY $GITHUB_REPOSITORY:$SHORT_SHA
        docker push $GITHUB_REPOSITORY:$SHORT_SHA
        echo "SHORT_SHA: ${SHORT_SHA}"
      env:
        SHORT_SHA: ${{ steps.vars.outputs.short_sha }}