docker-compose.yml

version: '3.8'

services:

  # Servise for the application
  web:

    build:
      context: ./services/web
      dockerfile: Dockerfile.prod

    # Keep in mind that the Gunicorn timeout value should be greater than or equal to the Nginx proxy_read_timeout value 
    # to avoid premature termination of requests by Nginx.
    command: gunicorn --bind 0.0.0.0:5000 app:app --workers 5 --timeout 3500 --graceful-timeout 3000
    
    # For production, add a volume to the web and nginx services in docker-compose.prod.yml 
    # so that each container will share a directory named "static":
    volumes:
      - ./services/db/data:/var/lib/mysql-files/:rw
      - ./services/web/static:/var/tmp/:rw

    expose:
      - 5000

    environment:
      - DB_HOST=db
      - DB_PORT=3306

    env_file:
      - ./.env.dev

    ports:
      - 8080:8080

    depends_on:
      - db

  # Servise for the database; the database will be built through this 
  # and a backup will be stored periodically under /data/mysql/data
  db:

    build:
      context: ./services/db
      dockerfile: Dockerfile

    env_file:
      - ./services/db/.env

    volumes:
      - ./services/db/data:/var/lib/mysql-files/:rw  # This `data` folder is a sym link to /data/mysql/data/microbetagDB
      - ./services/db/tmp:/var/tmp:rw

    ports:
      - "3306:3306"

  # Servise for the server; it will list to the app at port 5000 (through the nginx.conf file)
  # and it will serve its output through the web at port 1337
  nginx:

    build: ./services/nginx

    volumes:
      - ./services/nginx/certs/domain.crt:/etc/nginx/certs/certificate.crt
      - ./services/nginx/certs/new_domain.key:/etc/nginx/certs/certificate.key
      - ./services/nginx/certs/domain.csr:/etc/nginx/certs/certificate.csr

    ports:
      - 1337:80
      - 443:443

    depends_on:
      - web