anchor.diff:  RUN git clone https://github.com/cboettig/labnotebook.git
   WORKDIR /labnotebook
   RUN bundle config build.nokogiri --use-system-libraries && bundle install && bundle update
  -RUN gem install travis # For authentication
   
   
   ## Build environment for compiling Bootstrap >= 3.0.0 (Node.js / SASS environment)
  
positive.code: FROM ubuntu:14.04
  
  ## pass appropriate environmental variables to build successfully.  Including environments.  
  # ENV TWIT_KEY, TWIT_SECRET, TWIT_TOK, TWIT_TOK_SECRET, GIT_USER, 
  
  ## Configure ruby environment
  RUN apt-get -qq update && apt-get -qy upgrade
  
negative.code: 
  
  WORKDIR /labnotebook
  CMD bundle exec rake site:deploy
  