updated production docker compose for multi app multi container setup

version: '3.8'

services:

  tornado-backend:

    build: ./tornado-backend

    command: --db_host=postgres

    ports:

      - 8888:8888    

    depends_on:

      - postgres

    expose:

      - "8888"

    restart: unless-stopped

    networks:

      - app-network

      - nginx-network 

      blog-demo-01-net:

      nginx-net:

        aliases:

          - blog-01-backend

  postgres:

    image: postgres:10.3

      POSTGRES_DB: blog

    volumes:

      - ./pg_data:/var/lib/postgresql/data:rw

    restart: unless-stopped

    networks:

      - app-network      

      - blog-demo-01-net

networks:

  app-network:

  blog-demo-01-net:

    driver: bridge

  nginx-network:

  nginx-net:

    external: true