docker-compose.yml

version: "3.8"
services:
  db:
    container_name: db
    image: "postgres:alpine"
    environment:
      - POSTGRES_DB=${DOCKER_POSTGRES_DB}
      - POSTGRES_USER=${DOCKER_POSTGRES_USER}
      - POSTGRES_PASSWORD=${DOCKER_POSTGRES_PASSWORD}
      - PGDATA=${DOCKER_PGDATA}
    deploy:
      resources:
        limits:
          cpus: "0.50"
          memory: 200M
        reservations:
          memory: 100M
    networks:
      - webappnetwork
    volumes:
      - covid19dbvolume:/var/lib/postgresql/data # using named volume to persist data; run `docker volume create covid19dbvolume` before `docker-compose up`
    command: ["postgres", "-c", "log_statement=all"] # To see all the commands running on our db live
    ports:
      - "5432:5432"
  redis:
    container_name: redis
    image: "redis:alpine"
    deploy:
      resources:
        limits:
          cpus: "0.20"
          memory: 200M
        reservations:
          memory: 100M
    networks:
      - webappnetwork
  backend:
    container_name: backend
    restart: always
    deploy:
      resources:
        limits:
          cpus: "0.20"
          memory: 500M
        reservations:
          memory: 100M
    build:
      context: .
      target: backend-base
    command: uvicorn app.main:app --reload --workers 1 --host 0.0.0.0 --port 8000
    environment:
      - TORTOISEORM_DSN=${DOCKER_DSN}
    ports:
      - "8000:8000"
    volumes:
      - ./backend_service/app:/usr/src/app/app
    networks:
      - webappnetwork
    depends_on:
      - db
  celery:
    container_name: celery
    restart: always
    deploy:
      resources:
        limits:
          cpus: "0.20"
          memory: 500M
        reservations:
          memory: 100M
    build:
      context: .
      target: polling-base
    command: celery -A api_poller worker -l info
    volumes:
      - ./polling_service/api_poller/:/usr/src/app/api_poller/
    environment:
      - TORTOISEORM_DSN=${DOCKER_DSN}
      - POLLING_MINUTES=${DOCKER_POLLING_MINUTES}
      - POLLED_URL=${DOCKER_POLLED_URL}
    networks:
      - webappnetwork
    depends_on:
      - redis
  celery-beat:
    container_name: celery-beat
    restart: always
    deploy:
      resources:
        limits:
          cpus: "0.20"
          memory: 500M
        reservations:
          memory: 100M
    build:
      context: .
      target: polling-base
    command: celery -A api_poller beat -l info
    volumes:
      - ./polling_service/api_poller/:/usr/src/app/api_poller/
    environment:
      - TORTOISEORM_DSN=${DOCKER_DSN}
      - POLLING_MINUTES=${DOCKER_POLLING_MINUTES}
      - POLLED_URL=${DOCKER_POLLED_URL}
    networks:
      - webappnetwork
    depends_on:
      - redis
  ngrok:
    container_name: ngrok
    image: wernight/ngrok:latest
    ports:
      - 4040:4040
    environment:
      NGROK_PROTOCOL: http
      NGROK_PORT: backend:8000
    networks:
      - webappnetwork
    depends_on:
      - backend
      - db
networks:
  webappnetwork:
    driver: bridge
volumes:
  covid19dbvolume:
    external: true