anchor.diff:    && make \
     && make install \
     && mkdir -p /var/lib/monit/events \
  -  && cd ..
  +  && cd .. \
  +  && rm -rf $(ls -d monit-* | head -n 1)
   
   COPY . /app
   
  
positive.code:   && ./configure \
    && make \
    && make install \
    && cd ..
  
  # ruby
  RUN apt-get install --assume-yes \
  
negative.code:   && make install \
    && echo 'gem: --no-document' >> "$HOME/.gemrc" \
    && gem install bundler \
    && cd .. \
    && rm -rf $(ls -d ruby-* | head -n 1)
  
  # varnish
  RUN apt-get install --assume-yes \
  