services:
  db:
    image: postgres:17
    # container_name: pg-demo
    environment:
      POSTGRES_USER: postgres
      POSTGRES_PASSWORD: postgres
      # гарантируем UTF-8 и предсказуемую сортировку
      POSTGRES_INITDB_ARGS: "--encoding=UTF8 --lc-collate=en_US.UTF-8 --lc-ctype=en_US.UTF-8"
    ports:
      - "5432:5432"
    volumes:
      - pgdata:/var/lib/postgresql/data
      - ./initdb:/docker-entrypoint-initdb.d:ro
    healthcheck:
      test: ["CMD-SHELL", "pg_isready -U postgres -d postgres"]
      interval: 5s
      timeout: 5s
      retries: 20
    restart: unless-stopped

volumes:
  pgdata: