1. Today, I created a new dockerfile file. I want to use Docker to create a mirror image of my project and save it.

The structure of the project is as follows:

Docker’s configuration file is as follows:

FROM node:4.6.2
 RUN mkdir  /runDocker
 WORKDIR /runDocker
 COPY . /runDocker
 RUN npm install
 EXPOSE 5000
 CMD [ "npm", "start" ]

The following command is configured in package.json:

"scripts": {
 "start": "webpack-dev-server  --inline --hot --display-error-details  --history-api-fallback  --progress --colors --port 5000 --host 0.0.0.0",
 }

In progressdocker build -t test:1.0 .When I met the following problems, google and baidu failed, see if anyone also met this problem?

I feel that I am aware of the problem with npm install and have tried to change the version number of node, but this problem always occurs.

Screen Shot 2016-12-12 at 16.57.04.png

Thank you for your answer.