anchor.diff:          \
           chromium-browser \
           xpdf && \
  -    ln -s -f /usr/bin/lxterminal /usr/bin/xterm && \
       rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/*
   
   # Install websokify and noVNC
  
positive.code:         setuptools && \
      pip2 install -U https://github.com/novnc/websockify/archive/master.tar.gz && \
      mkdir /usr/local/noVNC && \
      curl -s -L https://github.com/x11vnc/noVNC/archive/next.tar.gz | \
           bsdtar zxf - -C /usr/local/noVNC --strip-components 1 && \
      rm -rf /tmp/* /var/tmp/*
  
  
negative.code:         xserver-xorg-video-dummy \
          lxde \
          x11-xserver-utils \
          xterm \
          gnome-themes-standard \
          gtk2-engines-pixbuf \
          gtk2-engines-murrine \
  