anchor.diff:    && apt-get install --assume-yes \
       libpam-dev \
       ucspi-tcp \
  -  && curl https://mmonit.com/monit/dist/monit-5.20.0.tar.gz \
  +  && curl https://mmonit.com/monit/dist/monit-5.21.0.tar.gz \
       | tar xz \
     && cd $(ls -d monit-* | head -n 1) \
     && ./configure \
  
positive.code:   && apt-get install --assume-yes \
      libreadline-dev \
      libssl-dev \
    && curl https://cache.ruby-lang.org/pub/ruby/2.3/ruby-2.3.3.tar.bz2 \
      | tar xj \
    && cd $(ls -d ruby-* | head -n 1) \
    && ./configure \
  
negative.code:     libxml2-dev \
      pkg-config \
      zlib1g-dev \
    && curl https://www.imagemagick.org/download/ImageMagick-6.9.8-0.tar.xz \
      | tar xJ \
    && cd $(ls -d ImageMagick-* | head -n 1) \
    && ./configure \
  