message: Update Dockerfile
  Use of COPY for consistence in Dockerfile
  Changed RABBITMQ_DEFAULT_HA_PATTERN default value
diff: @@ -5,7 +5,7 @@ ENV LAGOON_VERSION=$LAGOON_VERSION
  ENV RABBITMQ_DEFAULT_USER=guest \
  RABBITMQ_DEFAULT_PASS="guest"\
  - RABBITMQ_DEFAULT_HA_PATTERN='^lagoon-'
  + RABBITMQ_DEFAULT_HA_PATTERN='^$'
  COPY rabbitmq_delayed_message_exchange-3.7.0.ez /plugins
  @@ -16,7 +16,7 @@ COPY definitions.json /etc/rabbitmq/definitions.json
  RUN chgrp 0 /etc/rabbitmq/definitions.json; chmod g+rw /etc/rabbitmq/definitions.json
  # Copy a custom entrypoint
  -ADD cluster-rabbit.sh /
  +COPY cluster-rabbit.sh /
  RUN chgrp 0 /cluster-rabbit.sh; chmod +x /cluster-rabbit.sh
  ENTRYPOINT /cluster-rabbit.sh
  