anchor.diff:      sp \
       rprojroot \
       sessioninfo \
  -    arm
  +    arm 
   
   
   RUN Rscript -e 'install.packages("CASdatasets", repos = "http://cas.uqam.ca/pub/R/", type="source")'
  
positive.code:     zlib1g-dev \
    && apt-get clean \
    && install2.r --error \
      tidyverse \
      data.table \
      dtplyr \
      GGally \
  
negative.code: FROM rocker/verse:3.5.1
  
  RUN apt-get update \
    && apt-get install -y --no-install-recommends \
  