anchor.diff:     lmodern 
   # papaja
   RUN R CMD BATCH /r-studio/install-papaja.R
  -
  +RUN rm /install-papaja.Rout
   
   # install templates and examples from Reed and the Tufte package
   RUN DEBIAN_FRONTEND=noninteractive wget \
  
positive.code: RUN DEBIAN_FRONTEND=noninteractive gdebi -n shiny-server-1.5.7.907-amd64.deb
  RUN rm shiny-server-1.5.7.907-amd64.deb
  RUN R CMD BATCH /r-studio/install-Shiny.R
  
  
  # install sparklyr so we can do Spark via Livy
  RUN DEBIAN_FRONTEND=noninteractive wget \
  
negative.code: RUN rm /install-rmarkdown.Rout 
  
  # Cliburn also wanted these
  # but they have mega-dependencies, so intall them the other way
  RUN R CMD BATCH /r-studio/install-dendextend.R
  RUN rm /install-dendextend.Rout 
  