anchor.diff:     https://mirrors.nics.utk.edu/cran/src/contrib/prettyunits_1.0.2.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/progress_1.2.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/GGally_1.4.0.tar.gz \
  +   https://mirrors.nics.utk.edu/cran/src/contrib/ggstance_0.3.1.tar.gz
      https://mirrors.nics.utk.edu/cran/src/contrib/ggformula_0.9.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/mosaicCore_0.6.0.tar.gz \
      https://mirrors.nics.utk.edu/cran/src/contrib/mosaic_1.4.0.tar.gz 
  
positive.code: # install sparklyr so we can do Spark via Livy
  RUN DEBIAN_FRONTEND=noninteractive wget \
     https://mirrors.nics.utk.edu/cran/src/contrib/config_0.3.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/dbplyr_1.2.1.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/rappdirs_0.3.1.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/sparklyr_0.7.0.tar.gz
     
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     config_0.3.tar.gz \
     dbplyr_1.2.1.tar.gz \
     rappdirs_0.3.1.tar.gz \
     sparklyr_0.7.0.tar.gz
     
  RUN rm \
    config_0.3.tar.gz \
    dbplyr_1.2.1.tar.gz \
    rappdirs_0.3.1.tar.gz \
    sparklyr_0.7.0.tar.gz
  
  
  # some more TeX so that papaja can be installed and students can create APA templates in Rmarkdown
  
negative.code: 
  	
  RUN DEBIAN_FRONTEND=noninteractive wget \
     https://mirrors.nics.utk.edu/cran/src/contrib/rgdal_1.3-4.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/rgeos_0.3-28.tar.gz \
     https://mirrors.nics.utk.edu/cran/src/contrib/uuid_0.1-2.tar.gz
   
   
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     rgdal_1.3-4.tar.gz \
     rgeos_0.3-28.tar.gz \
     uuid_0.1-2.tar.gz 
  
  RUN rm \
     rgdal_1.3-4.tar.gz \
     rgeos_0.3-28.tar.gz \
     uuid_0.1-2.tar.gz
  
  RUN R CMD BATCH /r-studio/install-rappdirs.R
  