anchor.diff:  COPY phantom /opt/mean.js/node_modules
   
   # Install MEAN.JS Prerequisites
  -RUN npm install --quiet -g gulp bower yo mocha karma-cli pm2 && npm cache clean
  +RUN npm install --quiet -g gulp bower yo mocha karma-cli pm2 gulp-if && npm cache clean
   
   
   RUN mkdir -p /opt/mean.js/public/lib
  
positive.code: COPY . /opt/mean.js
  
  # Run MEAN.JS server
  CMD ["npm", "start"]
  
negative.code:  && apt-get clean \
   && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
  # Install dumb-init
  RUN wget https://github.com/Yelp/dumb-init/releases/download/v1.2.0/dumb-init_1.2.0_amd64.deb
  RUN dpkg -i dumb-init_*.deb
  
  # Install nodejs
  RUN curl -sL https://deb.nodesource.com/setup_4.x | sudo -E bash -
  RUN sudo apt-get install -yq nodejs \
  