anchor.diff:  
   # libraries Eric Green wanted
   RUN DEBIAN_FRONTEND=noninteractive wget \
  -   http://archive.linux.duke.edu/cran/src/contrib/lubridate_1.6.0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/assertthat_0.2.0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/lazyeval_0.2.0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/rlang_0.1.1.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/tibble_1.3.3.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/ggplot2_2.2.1.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/RColorBrewer_1.1-2.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/dichromat_2.0-0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/colorspace_1.3-2.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/munsell_0.4.3.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/labeling_0.3.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/scales_0.4.1.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/stargazer_5.2.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/reshape2_1.4.2.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/gtable_0.2.0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/proto_1.0.0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/minqa_1.2.4.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/nloptr_1.0.4.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/RcppEigen_0.3.3.3.0.tar.gz \
  -   http://archive.linux.duke.edu/cran/src/contrib/lme4_1.1-13.tar.gz
  +   https://archive.linux.duke.edu/cran/src/contrib/lubridate_1.6.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/assertthat_0.2.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/lazyeval_0.2.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/rlang_0.1.1.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/tibble_1.3.3.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/ggplot2_2.2.1.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/RColorBrewer_1.1-2.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/dichromat_2.0-0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/colorspace_1.3-2.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/munsell_0.4.3.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/labeling_0.3.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/scales_0.4.1.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/stargazer_5.2.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/reshape2_1.4.2.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/gtable_0.2.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/proto_1.0.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/minqa_1.2.4.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/nloptr_1.0.4.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/RcppEigen_0.3.3.3.0.tar.gz \
  +   https://archive.linux.duke.edu/cran/src/contrib/lme4_1.1-13.tar.gz
   
   RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
      lubridate_1.6.0.tar.gz  \
  
positive.code: RUN DEBIAN_FRONTEND=noninteractive apt-get  install -y \
     gdebi-core \
     libapparmor1
  #RUN DEBIAN_FRONTEND=noninteractive wget https://download2.rstudio.org/rstudio-server-1.0.44-amd64.deb
  #RUN DEBIAN_FRONTEND=noninteractive gdebi -n rstudio-server-1.0.44-amd64.deb
  #RUN rm rstudio-server-1.0.44-amd64.deb
  
negative.code: 
  # Cliburn Chan requested these:
  RUN DEBIAN_FRONTEND=noninteractive wget \
     https://archive.linux.duke.edu/cran/src/contrib/RColorBrewer_1.1-2.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/maps_3.2.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/zoo_1.8-0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/gcookbook_1.0.tar.gz \
     https://archive.linux.duke.edu/cran/src/contrib/corrplot_0.77.tar.gz 
  
  
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
  