anchor.diff:  
   #CMD /opt/idea/bin/idea.sh > /dev/null 2>&1
   #CMD /opt/pycharm/bin/pycharm.sh > /dev/null 2>&1
  -#CMD /opt/qtcreator/bin/qtcreator > /dev/null 2>&1
  +#CMD /opt/clion/bin/clion.sh > /dev/null 2>&1
   CMD bash
  
positive.code: FROM ubuntu:latest
  RUN useradd -m docker
  RUN apt-get update && apt-get install -y \
        curl wget p7zip-full \
        vim gedit \
        git ssh rsync \
        default-jdk \
  
negative.code: RUN mv pycharm* /opt/pycharm
  
  # C++ IDE
  RUN curl -L https://download.jetbrains.com/cpp/clion-1.2.1.tar.gz | tar xz
  RUN mv clion* /opt/clion
  
  # non-root user for running things and x forwarding
  USER docker
  