anchor.diff:     http://archive.linux.duke.edu/cran/src/contrib/BH_1.62.0-1.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/xml2_1.1.1.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/curl_2.4.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/jsonlite_1.3.tar.gz \
  +   http://archive.linux.duke.edu/cran/src/contrib/jsonlite_1.4.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/digest_0.6.12.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/downloader_0.4.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/memoise_1.0.0.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/plyr_1.8.4.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/XML_3.98-1.5.tar.gz \
  +   http://archive.linux.duke.edu/cran/src/contrib/XML_3.98-1.6.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/whisker_0.3-2.tar.gz \
      http://archive.linux.duke.edu/cran/src/contrib/bitops_1.0-6.tar.gz
   
   RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
  -   jsonlite_1.3.tar.gz \
  +   jsonlite_1.4.tar.gz \
      digest_0.6.12.tar.gz \
      memoise_1.0.0.tar.gz \
      whisker_0.3-2.tar.gz \
  
positive.code:    magrittr_1.5.tar.gz \
     stringr_1.2.0.tar.gz \
     roxygen2_5.0.1.tar.gz \
     XML_3.98-1.5.tar.gz \
     BH_1.62.0-1.tar.gz \
     xml2_1.1.1.tar.gz \
     rversions_1.0.3.tar.gz \
     downloader_0.4.tar.gz
  
  RUN rm \
     jsonlite_1.3.tar.gz \
     digest_0.6.12.tar.gz \
     memoise_1.0.0.tar.gz \
     whisker_0.3-2.tar.gz \
  
negative.code:    stringr_1.2.0.tar.gz \
     roxygen2_5.0.1.tar.gz \
     BH_1.62.0-1.tar.gz \
     XML_3.98-1.6.tar.gz \
     xml2_1.1.1.tar.gz \
     curl_2.4.tar.gz \
     rversions_1.0.3.tar.gz \
  