Angular 7在docker中不起作用，npm安装无法继续

Question

我遵循以下步骤

1. ng new angularApp
2. npm start http://localhost:4000工作正常

3. Dockerfile

   FROM node:8
   
   RUN mkdir -p /usr/src/app
   
   WORKDIR /usr/src/app
   
   Copy dependency definitions
   COPY package.json /usr/src/app
   
   
   RUN npm install
   
   COPY . /usr/src/app
   Expose the port the app runs in
   EXPOSE 4200
   
   
   CMD ["npm", "start"]
   

4. 我执行了docker build -t angular:dev .

我得到这个输出。请帮助

Step 5/8 : RUN npm install
 ---> Running in 48d3519ff1f1
npm WARN deprecated circular-json@0.5.9: CircularJSON is in maintenance only, flatted is its successor.