anchor.diff:  RUN chown testbot:testbot /srv/testbot
   WORKDIR /srv/testbot
   
  +# run nginx
  +RUN nginx -s stop || echo "nginx not running, no need to stop"
  +RUN nginx -c `pwd`/nginx.conf
  +
   # run as testbot
   USER testbot
   RUN wget https://github.com/rtc-io/rtc-testbot/archive/$APP_SHA.tar.gz -O app.tar.gz
  
positive.code: # include gstreamer
  RUN add-apt-repository -y ppa:gstreamer-developers/ppa
  
  # update sources
  RUN apt-get -y update --fix-missing
  
  # install packages
  RUN apt-get install -y nodejs git xvfb build-essential git xfonts-100dpi xfonts-75dpi xfonts-scalable xfonts-cyrillic
  
  # TODO: configure video loopback
  # RUN /tmp/setup-loopbackvideo.sh
  
negative.code: ENV HOME /home/testbot
  
  # configure ports that will be exposed
  EXPOSE 80
  
  # use aarnet mirror for quicker building while developing
  RUN sed -i 's/archive.ubuntu.com/mirror.aarnet.edu.au\/pub\/ubuntu\/archive/g' /etc/apt/sources.list
  