anchor.diff: -FROM circleci/python:3.7.5
  -
  +FROM debian:stable
   
   # Switch to the root user while we do our changes
   USER root
   
   # Install GStreamer and other required Debian packages
   RUN apt-get update \
  -  && apt-get install -y \
  +  && apt-get install -y --no-install-recommends \
  +    wget \
  +    gnupg2 \
  +    git \
  +    python3-setuptools \
  +    python3-pip \
       dumb-init \
       graphviz-dev \
       gstreamer1.0-plugins-bad \
  
positive.code: EXPOSE 6600 6680 1704 1705 5555/udp
  
  ENTRYPOINT ["/usr/bin/dumb-init", "/entrypoint.sh"]
  CMD ["mopidy"]
negative.code: # installing using pip.
  RUN git clone https://github.com/jaedb/Iris.git /iris \
   && cd /iris \
   && python3 setup.py develop \
   && mkdir -p /var/lib/mopidy/.config \
   && ln -s /config /var/lib/mopidy/.config/mopidy \
   # Allow mopidy user to run system commands (restart, local scan, etc)
   && echo "mopidy ALL=NOPASSWD: /iris/mopidy_iris/system.sh" >> /etc/sudoers
  
  # Install additional Python dependencies
  RUN python3 -m pip install --no-cache \
    tox \
    mopidy-mpd \
    mopidy-spotify \
  