anchor.diff:  
   CMD ["R"]
   
  -RUN date
   
  
positive.code: #   for R package rattle. (Suggested here: http://r.789695.n4.nabble.com/RGtk2-on-Debian-Testing-td3311725.html)
  #   (I tried a bunch of other things for a long time w/ no success.)
  
  RUN date
  
  RUN apt-get update \
    && apt-get install -y -f r-cran-rgtk2 libv8-dev libgeos-dev libgdal-dev libgdal1i libproj-dev \
      libtiff5-dev libfftw3-dev libjpeg-dev libhdf4-0-alt libhdf4-alt-dev \
      libhdf5-dev
  
  RUN date
  
  RUN install2.r --error \
  	DiagrammeR \
  
negative.code: 	Amelia \
  	prevR
  	
  ADD RProfile.R /etc/R/Rprofile.site
  
  # package installation using devtools' install_github function
  ADD package_installs.R /tmp/package_installs.R 
  
  RUN Rscript /tmp/package_installs.R
  
  