anchor.diff:  WORKDIR /usr/src/neuroglancer 
   RUN git checkout ndmaster
   RUN git pull 
  -
  +RUN uptime
   RUN npm install 
   RUN npm link 
   
  
positive.code: RUN apt-get -y install git 
  
  # Install webpack and webpack-dev-server globally
  RUN npm install -g webpack@^2.2.0
  RUN npm install -g webpack-dev-server@^2.2.0
  
  # Install neuroglancer from neurodata source 
  
negative.code: FROM node:8.7-slim
  
  # Update container and install packages 
  RUN apt-get update 
  