anchor.diff:  # usermod does not find the added user otherwise.
   RUN \
     adduser --system --home /home/$username --shell /bin/bash --group $username && \
  -  usermod $username -a -G sudo && \
  -  usermod $username -a -G staff && \
  -  usermod $username -a -G supergroup && \
  -  usermod $username -a -G ssh && \
  +  usermod $username -a -G sudo,staff,supergroup,ssh && \
     \
     mkdir -vp /home/$username/project && \
     git clone https://github.com/basherpm/basher.git /home/$username/.basher && \
  
positive.code:   apt-get update -qqy && \
    apt-get upgrade -y -o Dpkg::Options::="--force-confold" && \
    apt-get install -qqy --allow-downgrades \
      bash build-essential curl dash elinks git graphviz imagemagick figlet \
      make man moreutils netcat nodejs npm pandoc php-cli posh \
      python python-dev python-tox python-yaml \
      realpath ruby-full rubygems socat sqlite3 ssh sudo tmux tree uuid-runtime \
  
negative.code: 
  RUN \
    chgrp supergroup /etc/container_environment && \
    chmod -R g+rx /etc/container_environment
  
  
  USER $username
  