anchor.diff:  
   # Home & log dirs should be exportable
   VOLUME ["/home/researcher", "/var/log"]
  -
  -
  
positive.code: # Install EasyDAV dependencies
  RUN pip install kid flup
  # Install NPM
  RUN yum install -y tar gcc-c++ && \ 
    curl -L https://npmjs.org/install.sh | clean=no sh
  
  # Install tty-lean.js
  
negative.code: RUN rpm -Uvh http://nginx.org/packages/centos/7/noarch/RPMS/$( \
    curl http://nginx.org/packages/centos/7/noarch/RPMS/ | \
    grep -Po 'nginx-release.*?\.rpm' | head -1)
  
  # Install
  # - supervisord for monitoring
  # - nginx for reverse-proxying
  