message: Support different streams for receiving indy-nodes deb packages from repo.sovrin.org in indy-pool.dockerfile.
diff: @@ -19,7 +19,8 @@ RUN pip3 install -U \
  setuptools
  RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 68DB5E88
  -RUN echo "deb https://repo.sovrin.org/deb xenial master" >> /etc/apt/sources.list
  +ARG sovrin_stream=stable
  +RUN echo "deb https://repo.sovrin.org/deb xenial $sovrin_stream" >> /etc/apt/sources.list
  RUN useradd -ms /bin/bash -u $uid sovrin
  