docker-compose.yaml

version: "3"
services:
  frontend:
    build: frontend
    depends_on:
      - server
    environment: 
      CI: "true" # allows create-react-app to run inside docker
      REACT_APP_API_URL: "http://localhost:3100"
    ports:
      - "3000:3000"
      - "35729:35729" # exposes websocket for live reload
    command: yarn start
    volumes:
      - ./frontend:/app/
      - /app/node_modules

  server:
    build: server
    depends_on:
      - postgres
    environment:
      DATABASE_URL: postgres://user:pass@postgres:5432/db
      NODE_ENV: development
      PORT: 3100
    ports:
      - "3100:3100"
    command: npm run dev
    volumes:
      - ./server:/app/
      - /app/node_modules

  postgres:
    image: postgres:10.4
    ports:
      - "35432:5432"
    environment:
      - POSTGRES_MULTIPLE_DATABASES="db","db_test"
      - POSTGRES_USER=user
      - POSTGRES_PASSWORD=pass
    volumes:
      - ./docker-postgresql-multiple-databases:/docker-entrypoint-initdb.d
      - ./postgres-data:/var/lib/postgresql/data