anchor.diff:      && apt-get install -y --no-install-recommends nodejs npm \
       && apt-get clean \
       && rm -rf /var/lib/apt/lists/* \
  -    && ln -s /usr/bin/nodejs /usr/bin/node \
       && npm install npm@latest -g \
       && npm install -g jshint
   
  
positive.code:         python-wheel \
          rsync \
          software-properties-common \
          snappy \
          sudo \
          valgrind \
          zlib1g-dev \
  
negative.code:         git \
          gnupg-agent \
          libbz2-dev \
          libfuse-dev \
          libprotobuf-dev \
          libprotoc-dev \
  