backend-github-action-example.yml

steps:
  - uses: actions/checkout@v2

  - run: yarn install

  - run: yarn test

  - run: yarn docker:build

  - run: yarn docker:login
    env:
      DOCKERHUB_USERNAME: ${{ secrets.DOCKERHUB_USERNAME }}
      DOCKERHUB_PASSWORD: ${{ secrets.DOCKERHUB_PASSWORD }}

  - run: yarn docker:push

  # this action will ssh into VPS then run 3 commands:
  # docker pull name/label:latest => pull image from docker
  # docker tag name/label:latest dokku/prod:latest => tag image (this is needed for dokku)
  # dokku tags:deploy prod latest => dokku deploys that docker image
  - name: deploy to dokku
    uses: fifsky/ssh-action@master
    with:
      command: docker pull name/label:latest && docker tag name/label:latest dokku/prod:latest && dokku tags:deploy prod latest
      host: ${{ secrets.SSH_HOST }}
      user: ${{ secrets.SSH_USER }}
      key: ${{ secrets.SSH_PRIVATE_KEY }}

scripts.json

{
   "scripts":{
      "docker:build":"docker build -t name/label:latest .",
      "docker:login":"docker login -u $DOCKERHUB_USERNAME -p $DOCKERHUB_PASSWORD",
      "docker:push":"docker push name/label:latest"
   }
}