anchor.diff:  
   # Because COPY doesn't respect USER...
   USER root
  -RUN chown -R researcher:researcher /etc /opt /var
  -USER researcher
  +RUN chown -R researcher:researcher /etc /opt /var /home/researcher
   
   # Check nginx config is OK
   RUN nginx -t
  
positive.code: # DOCKER-VERSION 1.0
  FROM dit4c/dit4c-container-base:latest
  MAINTAINER t.dettrick@uq.edu.au
  
  # Install
  
negative.code: # - nltk dependencies
  # - Xvfb for Python modules requiring X11
  # - GhostScript & ImageMagick for image manipulation
  RUN rpm --rebuilddb && yum install -y \
    gcc python34-devel \
    blas-devel lapack-devel \
    libpng-devel freetype-devel \
  