anchor.diff:  
   # Install Python 3 packages
   RUN conda install --quiet --yes \
  -	'ipywidgets=4.1*' \
  -	'pandas=0.17*' \
  -	'numexpr=2.5*' \
  -	'matplotlib=1.5*' \
  -	'scipy=0.17*' \
  -	'seaborn=0.7*' \
  -	'sympy=0.7*' \
  -	'cython=0.23*' \
  -	'bokeh=0.11*' \
  -	'h5py=2.5*' \
  +  'ipywidgets=4.1*' \
  +  'pandas=0.17*' \
  +  'numexpr=2.5*' \
  +  'matplotlib=1.5*' \
  +  'scipy=0.17*' \
  +  'seaborn=0.7*' \
  +  'sympy=0.7*' \
  +  'cython=0.23*' \
  +  'bokeh=0.11*' \
  +  'h5py=2.5*' \
       'nose=1.3*' \
  -	&& conda clean -tipsy
  +  && conda clean -tipsy
   
   # Install Python 2 packages
   RUN conda create --quiet --yes -p $CONDA_DIR/envs/python2 python=2.7 \
  -	'ipython=4.1*' \
  -	'ipywidgets=4.1*' \
  -	'pandas=0.17*' \
  -	'numexpr=2.5*' \
  -	'matplotlib=1.5*' \
  -	'scipy=0.17*' \
  -	'seaborn=0.7*' \
  -	'sympy=0.7*' \
  -	'cython=0.23*' \
  -	'bokeh=0.11*' \
  -	'h5py=2.5*' \
  +  'ipython=4.1*' \
  +  'ipywidgets=4.1*' \
  +  'pandas=0.17*' \
  +  'numexpr=2.5*' \
  +  'matplotlib=1.5*' \
  +  'scipy=0.17*' \
  +  'seaborn=0.7*' \
  +  'sympy=0.7*' \
  +  'cython=0.23*' \
  +  'bokeh=0.11*' \
  +  'h5py=2.5*' \
       'nose=1.3*' \
  -	'pyzmq' \
  -	&& conda clean -tipsy
  +  'pyzmq' \
  +  && conda clean -tipsy
   
   USER root
   
  
positive.code: 
  # libav-tools for matplotlib anim
  RUN apt-get update && \
  	apt-get install -y --no-install-recommends libav-tools && \
  	apt-get install -y git \
  					   gcc \
  					   g++ \
  					   gfortran \
  					   libatlas-dev \
  					   libatlas-base-dev \
  					   libfreetype6-dev && \
  	apt-get clean && \
  	rm -rf /var/lib/apt/lists/*
  # Official Debian and Ubuntu images automatically run apt-get clean
  
  ### Change locale to en_GB
  # https://github.com/jupyter/docker-stacks/blob/master/minimal-notebook/Dockerfile
  
  RUN echo "en_GB.UTF-8 UTF-8" > /etc/locale.gen && \ 
  	locale-gen 
  
  ENV LC_ALL en_GB.UTF-8
  ENV LANG en_GB.UTF-8
  
negative.code: 
  RUN cd $NDIR/iv; ./build.sh; ./configure --prefix=`pwd` --with-x --x-includes=/usr/include/ --x-libraries=/usr/lib/ && make && make install
  
  #RUN cd $NDIR/nrn; sh src/nrnmpi/mkdynam.sh; ./build.sh;
  RUN cd $NDIR/nrn; ./build.sh;
  RUN cd $NDIR/nrn; 2to3 -w src/oc/mk_hocusr_h.py; sed -i '1i from __future__ import print_function' src/oc/mk_hocusr_h.py
  RUN cd $NDIR/nrn; sudo sed -i.bak -e "s/print sys.api_version,/from __future__ import print_function; print(sys.api_version)/" configure
  # --with-music=/usr/local
  