anchor.diff:  
   LABEL maintainer="Jack Liu <jacknlliu@gmail.com>"
   
  -RUN apt-get update -y && apt-get install -y curl bzip2 libfreetype6 \
  +RUN apt-get update -y && apt-get install -y --no-install-recommends curl bzip2 libfreetype6 \
   		libgl1-mesa-dev libglu1-mesa libxi6 libxrender1 module-init-tools
   
   # thanks to [ikester/blender-docker](https://github.com/ikester/blender-docker/tree/2.78c)
  
positive.code: RUN chmod a+rx /opt/scripts/container/install_brd.py
  
  USER ros
  RUN sudo /opt/blender/blender -b --python /opt/scripts/container/install_brd.py \
      && sudo chown -R ros:ros /home/ros/ \
      && echo 'export PATH=$PATH:/opt/blender/' >> /home/ros/.bashrc
  
  
negative.code: RUN apt-get install -y -q --no-install-recommends meshlab
  
  # install freecad
  RUN apt-get install -y -q --no-install-recommends python-software-properties \
      && add-apt-repository -y ppa:freecad-maintainers/freecad-stable \
  		&& apt-get update -y && apt-get install -y -q --no-install-recommends freecad freecad-doc \
  		&& pip2 install pycollada
  