anchor.diff:      && rvm requirements run \
       && rvm install 2.4.0 \
       && rvm use 2.4.0 --default \
  -    && gem install jekyll bundler
  +    && gem install jekyll bundler sass
   
   ENTRYPOINT ["/usr/local/bin/entrypoint.sh"]
   CMD ["/bin/bash"]
  
positive.code: 
  # Install JavaScript stuff
  RUN curl --silent --location https://rpm.nodesource.com/setup_6.x | bash -
  RUN yum -y install nodejs ruby && yum clean all
  RUN gem install sass && npm install -g grunt-cli && npm install -g bower && npm install -g http-server
  
  # Install Java, Maven, and Ant
  RUN yum -y install java-1.8.0-openjdk-devel.x86_64 maven ant && yum clean all
  
negative.code: COPY config/gradle_env.sh /etc/profile.d/gradle_env.sh
  
  # Install/upgrade ruby and jekyll
  RUN curl -sSL https://rvm.io/mpapis.asc | gpg --import - \
      && curl -L get.rvm.io | bash -s stable \
      && source /etc/profile.d/rvm.sh \
  