docker-compose.yml

# --------------------------------------------------------------------------
# When 'docker-compose up --build' is run, this file is executed.
#
# Its purpose is to run 3 containers (nginx, flask and postgres) and
# attach them together in a common network with shared volumes.
# --------------------------------------------------------------------------

version: '3'

services:
    postgres:
      build: ./postgres
      container_name: postgres
      ports:
        - 2345:5432
      networks:
        - net
      environment:
        - POSTGRES_USER=postgres
        - POSTGRES_PASSWORD=postgres
      volumes:
        - postgres:/var/lib/postgresql/data

    flask:
      build: ./flask
      container_name: flask
      volumes:
        - ./flask:/usr/src/app
      networks:
        - net
      environment:
        - APP_SETTINGS=config.DevelopmentConfig
        - DATABASE_URL=postgresql://postgres:postgres@postgres:5432/db_dev
        - DATABASE_TEST_URL=postgresql://postgres:postgres@postgres:5432/db_test
        - SECRET_KEY=dockertutorial
      depends_on:
        - postgres
      links:
        - postgres
      command: gunicorn --worker-class eventlet -w 4 -b 0.0.0.0:8000 manage:app

    nginx:
      build: ./nginx
      container_name: nginx
      ports:
        - 80:80
      restart: always
      networks:
        - net
      volumes:
        - ./flask/project/static:/usr/share/nginx/html/static
      depends_on:
        - flask

volumes:
  postgres:

networks:
  net: