anchor.diff:     maps_3.2.0.tar.gz \
      zoo_1.8-1.tar.gz \
      gcookbook_1.0.tar.gz \
  -   corrplot_0.84.tar.gz \
  -   sparklyr_0.7.0.tar.gz
  +   corrplot_0.84.tar.gz 
      
   
   # install rmarkdown
  
positive.code:    maps_3.2.0.tar.gz \
     zoo_1.8-1.tar.gz \
     gcookbook_1.0.tar.gz \
     corrplot_0.84.tar.gz \
     sparklyr_0.7.0.tar.gz
  
  
  RUN rm \
  
negative.code: RUN DEBIAN_FRONTEND=noninteractive gdebi -n shiny-server-1.5.3.838-amd64.deb
  RUN rm shiny-server-1.5.3.838-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 \
     https://mirrors.nics.utk.edu/cran/src/contrib/sparklyr_0.7.0.tar.gz
     
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     sparklyr_0.7.0.tar.gz
     
  RUN rm \
    sparklyr_0.7.0.tar.gz
  
  
  # some more TeX so that papaja can be installed and students can create APA templates in Rmarkdown
  RUN apt-get update 
  