anchor.diff:      DEBIAN_FRONTEND=noninteractive apt-get clean && \
       rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
   
  +# Adding NodeJS repo (for up-to-date versions)
  +# This command is a stripped down version of "curl --silent --location https://deb.nodesource.com/setup_0.12 | bash -"
  +RUN curl -s https://deb.nodesource.com/gpgkey/nodesource.gpg.key | apt-key add - && \
  +    echo 'deb https://deb.nodesource.com/node_0.12 precise main' > /etc/apt/sources.list.d/nodesource.list && \
  +    echo 'deb-src https://deb.nodesource.com/node_0.12 precise main' >> /etc/apt/sources.list.d/nodesource.list
  +
   # Other language packages and dependencies
   RUN \
       DEBIAN_FRONTEND=noninteractive apt-get update && \
       DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes install \
  -    ruby1.9.1-full rlwrap \
  +    ruby1.9.1-full rlwrap nodejs \
       --no-install-recommends && \
       # Cleanup
       DEBIAN_FRONTEND=noninteractive apt-get clean && \
  
positive.code: 
  # Bundler
  RUN gem install bundler
  
  # Node JS 0.12.0
  RUN curl https://deb.nodesource.com/node012/pool/main/n/nodejs/nodejs_0.12.0-1nodesource1~wheezy1_amd64.deb > node.deb \
      && dpkg -i node.deb \
      && rm node.deb
  
  # Grunt, Bower
  RUN npm install -g grunt-cli bower
  
negative.code: RUN \
      DEBIAN_FRONTEND=noninteractive apt-get update && \
      DEBIAN_FRONTEND=noninteractive apt-get -y --force-yes install \
      supervisor curl wget zip git mysql-client pv apt-transport-https \
      --no-install-recommends && \
      # Cleanup
      DEBIAN_FRONTEND=noninteractive apt-get clean && \
  