anchor.diff:  
   MAINTAINER Werner Beroux <werner@beroux.com>
   
  -RUN echo "Install dependencies" \
  -    && apt-get update \
  -    && apt-get install -y --no-install-recommends \
  -         ca-certificates \
  +RUN buildDeps=' \
            cmake \
            curl \
            g++ \
  
positive.code:     && make install \
  
      && echo "Clean-up" \
      && apt-get purge --auto-remove -y \
           cmake \
           curl \
           g++ \
           libboost-system-dev \
           libssl-dev \
           make \
           pkg-config \
           libqt4-dev \
           qtbase5-dev \
      && apt-get clean \
      && rm -rf /var/lib/apt/lists/* /tmp/* /var/tmp/* \
  
  
negative.code:          make \
           pkg-config \
           qtbase5-dev \
      ' \
      && set -x \
      && echo "Install dependencies" \
      && apt-get update \
      && apt-get install -y --no-install-recommends \
           $buildDeps \
           ca-certificates \
           libboost-system1.55.0 \
           libc6 \
           libgcc1 \
  