anchor.diff:      libcairo2 libgfortran3 libglib2.0-0 libjpeg8 libpango-1.0-0 libpangocairo-1.0-0 \
       libtcl8.6 libtiff5 libtk8.6 libx11-6 libxt6 gfortran fonts-dejavu libblas-dev liblapack-dev\
   	libx11-dev mesa-common-dev libglu1-mesa-dev libcurl4-openssl-dev openssl \
  +	libx11-dev libgl1-mesa-dev libglu1-mesa-dev \
  +	libpaper-utils libpaper1 libtcl8.5 libtk8.5 tcl8.5 tk8.5 unzip xdg-utils zip ed \
       && apt-get clean && \
       rm -rf /var/lib/apt/lists/*
  -
  -RUN wget https://mran.revolutionanalytics.com/install/mro/3.2.5/MRO-3.2.5-Ubuntu-14.4.x86_64.deb && \
  -    echo "f73378c5942621f8f49f7c28ce107608bfe71f808ba5bf58379437b2963b6894 MRO-3.2.5-Ubuntu-14.4.x86_64.deb" | sha256sum -c - && \
  -    dpkg -i MRO-3.2.5-Ubuntu-14.4.x86_64.deb && \
  -    rm MRO-3.2.5-Ubuntu-14.4.x86_64.deb
  -
  -
   
   # Neovim
   RUN add-apt-repository ppa:neovim-ppa/unstable && \
  
positive.code: 
  USER root
  
  # R packages
  # Install MCMCglmm
  RUN R -e 'install.packages("ape", repos="http://cran.us.r-project.org")'
  RUN R -e 'install.packages("MCMCglmm", repos="http://cran.us.r-project.org")'
  RUN R -e 'install.packages("httr", repos="http://cran.us.r-project.org")'
  RUN R -e 'install.packages("git2r", repos="http://cran.us.r-project.org")'
  RUN R -e 'install.packages("devtools", repos="http://cran.us.r-project.org")'
  RUN R -e 'install.packages("doMC", repos="http://cran.us.r-project.org")'
  RUN R -e 'install.packages("testthat", repos="http://cran.us.r-project.org")'
  
  
negative.code: 
  # rgl dependencies
  RUN apt-get update && apt-get install -yq --no-install-recommends \
      && apt-get clean && \
      rm -rf /var/lib/apt/lists/*
  
  