anchor.diff:      /bin/dash -c 'echo touching dash' && \
       hostname && \
       touch -a /start && \
  -    (find /root /usr /var /lib /bin /sbin -type f -not -anewer /img_creation -delete || true)
  +    (find /root /usr /var /lib /bin /sbin -type f -not -anewer /img_creation -delete || true) && \
  +    (find /root /usr /var /lib /bin /sbin -xtype l -delete || true) && \
  +    (find /root /usr /var /lib /bin /sbin -type d -empty -delete 2>/dev/null || true) && \
  +    (find /root /usr /var /lib /bin /sbin -xtype l -delete 2>/dev/null || true) && \
  +    (find /root /usr /var /lib /bin /sbin -type d -empty -delete 2>/dev/null || true) && \
  +    (find /root /usr /var /lib /bin /sbin -xtype l -delete 2>/dev/null || true) && \
  +    (find /root /usr /var /lib /bin /sbin -type d -empty -delete 2>/dev/null || true) && \
  +    (find /root /usr /var /lib /bin -xtype l -delete || true) && \
  +    (find /root /usr /var /lib /bin -type d -empty -delete || true) && \
  +    (find /root /usr /var /lib /bin -xtype l -delete || true) && \
  +    (find /root /usr /var /lib /bin -type d -empty -delete || true) && \
  +    (find /root /usr /var /lib /bin -xtype l -delete || true) && \
  +    (find /root /usr /var /lib /bin -type d -empty -delete || true)
  
positive.code: ENTRYPOINT ["/start"]
  
  # Default arguments if not provided on `docker run` command line:
  CMD ["--save-conf"]
  
  # TODO: where to store stuff
  # CMD ["--directories etc"]
  
negative.code: # Make the following massive touch a bit quicker by deleting content:
  RUN rm -rf /root/.opam/repo /root/.opam/system /home /boot /opt /media /mnt /srv
  
  RUN touch /img_creation && \
      find /root /usr /var /lib /bin /sbin -type f | xargs touch -m -r /img_creation && \
      sleep 1.1 && \
      find /root/.opam/ramen -type f -name META -exec sed -i -e /exists_if/d {} \; && \
      fprobe -i eth0 -fip localhost:2055 && \
      (timeout 10s collectd -f -C /etc/collectd/collectd.conf || true) && \
      ramen_configurator --help && \
      ramen start -d --daemon && sleep 2 && \
      ramen add --op 'SELECT MIN time, fit_multi(3, value, time) AS smth1 FROM demo/collectd' \
                --op 'READ AND DELETE FILES "/tmp/test.csv" PREPROCESS WITH "lz4 -d -c" (smth1 string, smth2 u128)' \
  