anchor.diff:  
   # install development tools.  Just for compiling python we need more than half of them.
   # this was my first Dockerfile.  Now I understand taht installing a group like this is not best practice
  -# install only what you need.  I've lost track of exactly what I need now.  Try taking this out and see what 
  +# install only what you need.  I've lost track of exactly what I need now.  Try taking this out and see what
   # failed due to missing dependencies.  I think I will be missing some python compile dependencies.
   #RUN yum groups mark install "Development Tools";\
   #	yum groups mark convert "Development Tools";\
  
positive.code: # install user packages
  RUN yum -y install stow vim;\
  	yum clean all
  
negative.code: FROM centos:centos7
  LABEL maintainer="Michael West <Michael.West@cambiahealth.com>"
  
  # note that this can be used as a mustache template
  # intention is to set proxy and set epel repository to use http
  # to support use as a Dockerfile mustache delimiter is hashtags instead of brackets
  # because the delimiter is changed to get output that is not HTML escaped use
  # delim, delim, ampersand, space, var, delim, delim
  # as described in the docs
  # https://mustache.github.io/mustache.5.html
  