anchor.diff:  
   	# cleanup
   	&& cd ../.. && rm -rf /usr/src/sixeleven \
  -	&& apt-get -y purge build-essential libssl-dev libboost-all-dev git \
  +	&& apt-get -y purge build-essential libssl1.0-dev gnupg dirmngr libboost-all-dev zlib1g-dev git \
   	&& apt-get -y autoremove \
   	&& apt-get clean \
   	&& rm -rf /var/lib/apt/lists/*
  
positive.code: # 611 (SixEleven) docker iamge
  
  FROM debian:jessie
  
  MAINTAINER Florian Fuessl <flo@degnet.de>
  ENV REFRESHED_AT 20160321
  
  RUN groupadd -r sixeleven && useradd -r -m -g sixeleven sixeleven
  
  
negative.code: 
  	# install dependencies
  	&& apt-get install -y --no-install-recommends ca-certificates wget \
  		build-essential libssl1.0-dev gnupg dirmngr libboost-all-dev zlib1g-dev git \
  
  	# grab gosu for easy step-down from root
  	&& gpg --keyserver pgp.mit.edu --recv-keys B42F6819007F00F88E364FD4036A9C25BF357DD4 \
  	&& wget -qO /usr/local/bin/gosu "https://github.com/tianon/gosu/releases/download/1.10/gosu-$(dpkg --print-architecture)" \
  	&& wget -qO /usr/local/bin/gosu.asc "https://github.com/tianon/gosu/releases/download/1.10/gosu-$(dpkg --print-architecture).asc" \
  	&& gpg --verify /usr/local/bin/gosu.asc \
  	&& rm /usr/local/bin/gosu.asc \
  	&& chmod +x /usr/local/bin/gosu \
  