anchor.diff:     hms_0.4.2.tar.gz \
      readr_1.3.1.tar.gz \
      selectr_0.4-1.tar.gz \
  -   rvest_0.3.2.tar.gz \
  +   rvest_0.3.4.tar.gz \
      pbkrtest_0.4-7.tar.gz 
   
   # Shiny
  
positive.code:    readr_1.3.1.tar.gz \
     googlesheets_0.3.0.tar.gz \
     selectr_0.4-1.tar.gz \
     rvest_0.3.2.tar.gz \
     pbkrtest_0.4-7.tar.gz 
  
  RUN rm \
     chron_2.3-53.tar.gz \
     data.table_1.12.0.tar.gz \
     rematch_1.0.1.tar.gz \
     cellranger_1.1.0.tar.gz \
     tidyr_0.8.3.tar.gz \
  
negative.code:    https://archive.linux.duke.edu/cran/src/contrib/hms_0.4.2.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/readr_1.3.1.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/selectr_0.4-1.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/rvest_0.3.4.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/pbkrtest_0.4-7.tar.gz 
  	
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
     chron_2.3-53.tar.gz \
     data.table_1.12.2.tar.gz \
     rematch_1.0.1.tar.gz \
     cellranger_1.1.0.tar.gz \
     tidyr_0.8.3.tar.gz \
  