anchor.diff:  EXPOSE 8080
   
   # Add intellij binaries to path
  -ENV PATH $PATH:/usr/local/idea/bin
  +ENV PATH $PATH:/usr/local/idea/bin:/usr/local/firefox
   
   # Set up Intellij IDEA to add custom config and system path properties.
   RUN sed -i 's/# idea.config.path=/idea.config.path=/g' /usr/local/idea/bin/idea.properties
  
positive.code: RUN tar -xf ${IDEA_TARBALL} && \
      rm -rf *.tar.gz && \
      mv idea* idea
  
  # Clean up APT when done.
  RUN apt-get clean && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
  
negative.code: 
  # Have a variable for the tarball to ease maintenance.
  ENV IDEA_TARBALL ideaIC-14.0.3.tar.gz
  ENV FIREFOX_TARBALL firefox-28.0.tar.bz2
  ENV FIREFOX_URL http://ftp.mozilla.org/pub/mozilla.org/firefox/releases/28.0/linux-x86_64/en-GB/${FIREFOX_TARBALL}
  
  # Install Git & Maven3
  RUN add-apt-repository ppa:andrei-pozolotin/maven3 && \
  