我是Docker容器和Docker编写的新手。
我正在使用MongoDB和Docker使用docker-compose创建一个聊天微服务，但我无法连接MongoDB compass。下面是我的docker-compose文件：

version: "3"
    services:
      chat-service:
        build: "./chat-service"
      depends_on: 
        - chat-service-db
      volumes:
        - ./chat-service:/opt/app

    chat-service-db:
       environment:
         - MONGO_INITDB_ROOT_USERNAME=root
         - MONGO_INITDB_ROOT_PASSWORD=password
         - MONGO_INITDB_DATABASE=chatservice
       image: mongo
       ports:
         - 0.0.0.0:27017:27017

    user-service:
      build: "./user-service"
      depends_on: 
        - user-service-db
      volumes:
        - ./user-service:/opt/app

    user-service-db:
      environment:
        - MONGO_INITDB_ROOT_USERNAME=root
        - MONGO_INITDB_ROOT_PASSWORD=password
        - MONGO_INITDB_DATABASE=userservice
     image: mongo
     ports:
       - 0.0.0.0:27018:27017