message: [cli] Update dockerfile for CLI: add argument for APT channel.
diff: @@ -2,7 +2,9 @@ FROM ubuntu:16.04
  RUN apt-get update && apt-get install -y apt-transport-https
  +ARG indy_stream=master
  +
  RUN apt-key adv --keyserver keyserver.ubuntu.com --recv-keys 68DB5E88
  -RUN echo "deb https://repo.sovrin.org/sdk/deb xenial master" >> /etc/apt/sources.list
  +RUN echo "deb https://repo.sovrin.org/sdk/deb xenial $indy_stream" >> /etc/apt/sources.list
  RUN apt-get update && apt-get install -y indy-cli
  