anchor.diff:  #  - http://www.erlang.org/download.html
   #  - https://www.erlang-solutions.com/downloads/download-erlang-otp
   RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys 434975BD900CCBE4F7EE1B1ED208507CA14F4FCA
  -RUN echo 'deb http://packages.erlang-solutions.com/debian wheezy contrib' > /etc/apt/sources.list.d/erlang.list
  +RUN echo 'deb http://packages.erlang-solutions.com/debian jessie contrib' > /etc/apt/sources.list.d/erlang.list
   
   # get logs to stdout (thanks @dumbbell for pushing this upstream! :D)
   ENV RABBITMQ_LOGS=- RABBITMQ_SASL_LOGS=-
  
positive.code: FROM debian:wheezy
  
  # add our user and group first to make sure their IDs get assigned consistently, regardless of whatever dependencies get added
  RUN groupadd -r rabbitmq && useradd -r -d /var/lib/rabbitmq -m -g rabbitmq rabbitmq
  
negative.code: # http://www.rabbitmq.com/install-debian.html
  # "Please note that the word testing in this line refers to the state of our release of RabbitMQ, not any particular Debian distribution."
  RUN apt-key adv --keyserver ha.pool.sks-keyservers.net --recv-keys F78372A06FF50C80464FC1B4F7B8CEA6056E8E56
  RUN echo 'deb http://www.rabbitmq.com/debian testing main' > /etc/apt/sources.list.d/rabbitmq.list
  
  ENV RABBITMQ_VERSION 3.5.5-1
  
  