services:
  postgres:
    ports:
      - "127.0.0.1:${DB_PORT:-5433}:5432"

  backend:
    ports:
      - "127.0.0.1:${BACKEND_PORT:-3001}:3000"

  frontend:
    ports:
      - "127.0.0.1:${FRONTEND_PORT:-4322}:4321"