anchor.diff:  
   FROM debian:jessie
   #FROM ubuntu:16.04
  +MAINTAINER Alexandre Savio <alexsavio@gmail.com>
  +
   RUN ln -snf /bin/bash /bin/sh
  -MAINTAINER Alexandre Savio <alexsavio@gmail.com>
   
   ENV PETPVC_VERSION master
   ENV ITK_VERSION v4.10.0
  
positive.code: ENV PYENV_NAME pytre
  
  ## Configure default locale
  RUN echo "en_US.UTF-8 UTF-8" >> /etc/locale.gen && \
      locale-gen en_US.utf8 && \
      /usr/sbin/update-locale LANG=en_US.UTF-8
  
  # Set environment
  ENV LC_ALL en_US.UTF-8
  
negative.code: ENV HOME /work
  ENV SOFT $HOME/soft
  ENV BASHRC $HOME/.bashrc
  
  # Create a non-priviledge user that will run the services
  ENV BASICUSER basicuser
  ENV BASICUSER_UID 1000
  
  RUN useradd -m -d /work -s /bin/bash -N -u $BASICUSER_UID $BASICUSER && \
      chown $BASICUSER /work
  USER $BASICUSER
  WORKDIR $HOME
  
  # Add files.
  ADD root/.bashrc $BASHRC
  