anchor.diff:     https://archive.linux.duke.edu/cran/src/contrib/ggformula_0.9.1.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/mosaicCore_0.6.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/ggrepel_0.8.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/base64enc_0.1-3.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/crosstalk_1.0.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/htmlwidgets_1.3.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/png_0.1-7.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/raster_2.8-19.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/viridis_0.5.1.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/leaflet_2.0.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/mosaic_1.5.0.tar.gz 
   
  
positive.code: 
  RUN DEBIAN_FRONTEND=noninteractive wget \
      https://archive.linux.duke.edu/cran/src/contrib/pryr_0.1.4.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/htmlwidgets_1.2.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/profvis_0.3.5.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/RcppArmadillo_0.9.100.5.0.tar.gz \
      https://archive.linux.duke.edu/cran/src/contrib/servr_0.10.tar.gz \
  
negative.code:     DiagrammeR_1.0.0.tar.gz \
      tweenr_0.1.5.tar.gz \
      ggforce_0.1.3.tar.gz \
      jpeg_0.1-8.tar.gz \
      RgoogleMaps_1.4.2.tar.gz \
      rjson_0.2.20.tar.gz \
      mapproj_1.2.6.tar.gz \
      geosphere_1.5-7.tar.gz \
      ggmap_2.6.1.tar.gz \
      ggraph_1.0.2.tar.gz \
      shiny_1.1.0.tar.gz \
      shinyjs_1.0.tar.gz \
  