docker-compose.yml

version: '3'

services:
  backend:
    restart: always
    image: python:3.7
    # User setting to have files with correct permissions on the host.
    # Requires export $UID=$UID and export $GID=$GID somewhere (~/.bashrc or ~/.zshrc)
    # This is because UID and GID are shell variables, not env variables,
    # so it doesn't work without export.
    # See also: https://github.com/docker/compose/issues/2380
    user: "${UID}:${GID}"
    # Entrypoint activates virtual environment and refreshes dependencies
    working_dir: /src
    entrypoint: ./docker-entrypoint.sh
    command: flask run
    # command: /bin/bash -c "sleep infinity & wait"
    volumes:
      - ./backend:/src:cached
    ports:
      - "5000:5000"
    environment:
      FLASK_APP: /src/app/app.py
      FLASK_RUN_HOST: 0.0.0.0
      FLASK_CONFIG: local
      SQLALCHEMY_DATABASE_URI: 'postgresql://testuser:testpw@postgresql:5432/forum'
      SQLALCHEMY_TEST_DATABASE_URI: 'postgresql://testuser:testpw@postgresql:5432/forumtest'

  frontend:
    restart: always
    build:
      context: frontend
      dockerfile: Dockerfile
      args:
        - UID=$UID
        - GID=$GID
    user: "node"
    command: /bin/bash -c "yarn install && yarn serve"
    volumes:
      - ./frontend:/src:cached
    ports:
      - "8080:8080"

  postgresql:
    image: postgres:14.0-bullseye
    user: "${UID}:${GID}"
    environment:
      POSTGRES_USER: testuser
      POSTGRES_PASSWORD: testpw
    ports:
      - "5432:5432"
    volumes:
      - ./data/postgresql:/var/lib/postgresql/data