build_deploy_backend.yml

name: Backend Production Deployment

on:
  push:
    branches:
      - master
    paths:
      - "zubhub_backend/**"
      - "!zubhub_backend/zubhub/docs/**"
      - "!zubhub_backend/.gitignore"
      - "!zubhub_backend/.env.example"
      - "!zubhub_backend/.dockerignore"
  workflow_dispatch:

jobs:
  build_and_push:
    runs-on: ubuntu-latest
    strategy:
      matrix:
        service: ['web', 'celery', 'media']
    steps:
      - uses: unstructuredstudio/zubhub/.github/actions/checkout@master

      - name: Build and push ${{ matrix.service }}
        uses: unstructuredstudio/zubhub/.github/actions/docker_build_and_push@master
        with:
          dockerhub_username: ${{ secrets.DOCKERHUB_USERNAME }}
          dockerhub_token: ${{ secrets.DOCKERHUB_TOKEN }}
          context: ./zubhub_backend/
          file: ./zubhub_backend/compose/${{ matrix.service }}/prod/Dockerfile
          push: true
          tags: unstructuredstudio/zubhub-services_${{ matrix.service }}:latest

  deploy:
    needs: build_and_push
    runs-on: ubuntu-latest

    steps:
      - uses: unstructuredstudio/zubhub/.github/actions/checkout@master

      - uses: unstructuredstudio/zubhub/.github/actions/scp_action@master
        with:
          host: ${{ secrets.DO_BACKEND_HOST }}
          username: ${{ secrets.DO_BACKEND_USERNAME }}
          key: ${{ secrets.DO_SSHKEY }}
          source: "."
          target: "/home/zubhub-services/zubhub"

      - uses: unsctructuredstudio/zubhub/.github/actions/ssh_action@master
        with:
          host: ${{ secrets.DO_BACKEND_HOST }}
          username: ${{ secrets.DO_BACKEND_USERNAME }}
          key: ${{ secrets.DO_SSHKEY }}
          script: |
            cp /home/zubhub-services/zubhub/zubhub_backend/compose/deploy_backend.sh /home/zubhub-services/
            sudo bash /home/zubhub-services/deploy_backend.sh
            doctl compute droplet list 'zubhub-services*' > droplets.txt
            droplets_count=`wc -l < droplets.txt`
            rm droplets.txt
            docker service scale zubhub-services_web=$(($droplets_count - 1))