anchor.diff:      echo "library(readr)" >> /etc/R/Rprofile.site && \
       echo "library(openintro)" >> /etc/R/Rprofile.site && \
       echo "library(broom)" >> /etc/R/Rprofile.site && \
  +    echo "library(GGally)" >> /etc/R/Rprofile.site && \
       echo "}" >> /etc/R/Rprofile.site  && \
       echo "" >> /etc/R/Rprofile.site
   
  
positive.code:    http://mirrors.nics.utk.edu/cran/src/contrib/mnormt_1.5-3.tar.gz \
     http://mirrors.nics.utk.edu/cran/src/contrib/psych_1.5.8.tar.gz \
     http://mirrors.nics.utk.edu/cran/src/contrib/broom_0.3.7.tar.gz \
     http://mirrors.nics.utk.edu/cran/src/contrib/mosaic_0.12.tar.gz 
  
  RUN DEBIAN_FRONTEND=noninteractive R CMD INSTALL \
  
negative.code:    stargazer_5.2.tar.gz \
     minqa_1.2.4.tar.gz \
     nloptr_1.0.4.tar.gz \
     RcppEigen_0.3.2.5.1.tar.gz \
     lme4_1.1-10.tar.gz
  
  RUN rm \
     lubridate_1.3.3.tar.gz  \
  