anchor.diff:  # add a PS1 that makes sense
   RUN echo 'export PS1="\u@\h $ "' >> /etc/profile.d/prompt.sh
   
  -# expose port 8080 for webapps
  -EXPOSE 8080
  +# Install common nodejs apps
  +RUN /usr/local/bin/npm install -g coffee-script@1.7.1
  +RUN /usr/local/bin/npm install -g supervisor@0.6.0
  +RUN /usr/local/bin/npm install -g request
  +RUN /usr/local/bin/npm install -g uuid
  +RUN /usr/local/bin/npm install -g mocha
  +RUN /usr/local/bin/npm install -g chai
  +RUN /usr/local/bin/npm install -g ws
  +RUN /usr/local/bin/npm install -g querystring
   
   # startup with a commandline prompt
   CMD /bin/bash -l
  
positive.code: # VERSION 0.2
  
  FROM centos:centos6
  MAINTAINER Dave Goehrig dave@dloh.org
  
  # We need the developer tools to build the occasional add on or two
  RUN yum -y groupinstall "Development Tools"
  
negative.code: # setup pathing
  RUN echo "export PATH=/usr/local/bin:/usr/local/sbin:$PATH" >> /etc/profile.d/nodejs.sh
  
  # Cleanup
  RUN rm -rf node-v0.10.18.tar.gz node-v0.10.18
  
  