设置docker.compose.test：3000端口已经分配

我有一个项目，其中包括一个docker设置，我正在努力工作。 我的Dockerfile是：

FROM node:8-alpine EXPOSE 3000 ARG NODE_ENV ENV NODE_ENV $NODE_ENV RUN mkdir /app WORKDIR /app ADD package.json yarn.lock seed.js /app/ RUN yarn --pure-lockfile ADD . /app CMD ["yarn seed"] CMD ["yarn", "docker:start"] 

和我的docker – 撰写：

 version: "2" services: isawyou-server: build: . environment: - MONGO_URI=mongodb://mongodb:27017/isawyou volumes: - .:/app ports: - "3000:3000" depends_on: - mongodb mongodb: image: mongo ports: - "27017:27017" 

现在，对于docker-compose.test，我正在尝试按照https://docs.docker.com/docker-cloud/builds/automated-testing/中的说明进行设置。 我基本上想要有一个不同的数据库进行testing。 我尝试了不同的configuration，但没有任何作品。 我得到的错误是：

  yarn run v1.3.2 $ docker-compose -f docker-compose.yml -f docker-compose.test.yml up --abort-on-container-exit Starting server_mongodb_1 ... Starting server_mongodb_1 ... done Recreating server_sut_1 ... Recreating server_sut_1 Starting server_isawyou-server_1 ... Recreating server_sut_1 ... error ERROR: for server_sut_1 Cannot start service sut: driver failed programming external connectivity on endpoint server_sut_1 (bbStarting server_isawyou-server_1 ... done ERROR: for sut Cannot start service sut: driver failed programming external connectivity on endpoint server_sut_1 (bbfc8b734ab6d4df2f3d3060245c81e0c88e945952dfe62c74f2aae6510d2cfe): Bind for 0.0.0.0:3000 failed: port is already allocated ERROR: Encountered errors while bringing up the project. error Command failed with exit code 1. info Visit https://yarnpkg.com/en/docs/cli/run for documentation about this command. 

我的docker-compose.test目前看起来像：

• 读取unix @ – > / var / run / docker.sock：read：由对等方重置连接
• 如何在Docker窗口上设置远程私人registry？
• docker-compose中的“restart：always”策略如何工作？
• 端口转发到在Docker容器上运行的Gitlab服务器
• 如何访问Docker中的共享文件夹

 version: "2" services: sut: build: . environment: - MONGO_URI=mongodb://mongodb:27017/isawyou volumes: - .:/app ports: - "3000:3000" depends_on: - mongodb command: yarn test mongodb: image: mongo ports: - "27017:27017"