anchor.diff:  ENV LANG en_US.UTF-8
   RUN echo "en_US.UTF-8 UTF-8" >/etc/locale.gen && locale-gen
   
  -#EXPOSE 4040
  -
   WORKDIR /signalbroker
   
   COPY --from=build-env signalbroker/_build ./_build/
  
positive.code: ENV LANG en_US.UTF-8
  RUN echo "en_US.UTF-8 UTF-8" >/etc/locale.gen && locale-gen
  
  # RUN curl -sO https://packages.erlang-solutions.com/erlang-solutions_1.0_all.deb \
  #     && dpkg -i erlang-solutions_1.0_all.deb
  
  # RUN apt-get install apt-transport-https ca-certificates
  
  #RUN curl -s https://packages.erlang-solutions.com/debian/erlang_solutions.asc \
  #     | apt-key add -
  #RUN printf "deb https://packages.erlang-solutions.com/debian stretch contrib\n" \
  #     >>/etc/apt/sources.list.d/erlang-solutions.list
  
  #RUN apt-get update \
  #    && DEBIAN_FRONTEND=noninteractive \
  #       apt-get install -y --no-install-recommends \
  #               esl-erlang \
  #               elixir=1.7.4-*
  
  # # For erlang dev env, code coverage etc
  # RUN apt-get install -y --no-install-recommends \
  #             erlang-dev erlang-tools erlang-common-test
  
  ARG MIX_ENV=prod
  
  # RUN uname -a
  RUN mix local.hex --force
  RUN mix local.rebar --force
  
  
negative.code: 
  FROM debian:stretch
  
  RUN apt-get update \
      && DEBIAN_FRONTEND=noninteractive \
         apt-get install -y --no-install-recommends \
  