anchor.diff:  RUN npm run build 
   RUN npm run grunt 
   
  -
   CMD [ "npm", "start" ]
   
  -EXPOSE 8000 +EXPOSE 8000 
  
positive.code: RUN git clone https://github.com/neurodata/neuroglancer.git 
  
  WORKDIR /usr/src/neuroglancer 
  RUN npm install 
  RUN npm link 
  
  
negative.code: FROM node:7.7-slim
  
  # Update container and install packages 
  RUN apt-get update 
  