anchor.diff: -FROM daocloud.io/node:5
  +FROM daocloud.io/node:7.5.0-onbuild
   # replace this with your application's default port
   
   
  
positive.code: #启动 npm 监听程序
  # CMD ['npm',' start']
  
  COPY . /mapp
  WORKDIR /mapp
  
  RUN npm --registry=https://registry.npm.taobao.org --disturl=https://npm.taobao.org/dist install
  
  EXPOSE 9999
  EXPOSE 80
  
negative.code: 
  MAINTAINER Zheng Jianwen "zhengjianwen@outlook.com"
  
  COPY . /mapp
  WORKDIR /mapp
  
  RUN cp /etc/apt/sources.list /etc/apt/sources.list.bak
  ADD config/sources.list /etc/apt/sources.list
  