anchor.diff:  COPY VERSION /
   
   # Allows any user to run mopidy, but runs by default as a randomly generated UID/GID.
  -RUN useradd -ms /bin/bash mopidy
  +# RUN useradd -ms /bin/bash mopidy
   ENV HOME=/var/lib/mopidy
   RUN set -ex \
    && usermod -G audio,sudo mopidy \
  
positive.code: RUN python3 -m pip install --no-cache \
    tox \
    mopidy-mpd \
    mopidy-spotify \
    mopidy-local \
    dbus-python \
    # pip not up-to-date for Mopidy-Tidal (https://github.com/tehkillerbee/mopidy-tidal/issues/14)
  
negative.code:   | APT_KEY_DONT_WARN_ON_DANGEROUS_USAGE=DontWarn apt-key add - \
    && wget -q -O /etc/apt/sources.list.d/mopidy.list https://apt.mopidy.com/buster.list \
    && apt-get update \
    && apt-get install -y libspotify-dev mopidy-spotify \
    && rm -rf /var/lib/apt/lists/*
  
  # Clone Iris from the repository and install in development mode.
  