title: stop rank 30 update on nominatim-docker build
body: <p>I am installing <a href="https://github.com/mediagis/nominatim-docker/tree/master/3.0" rel="nofollow noreferrer">nominatim-docker 3.0</a> on VM with 128 GB RAM and 8 vcpus with 1TB disk. I am almost going to run out of disk(only 25 GB left). I am wondering if it is ok to restart pgsql service to stop rank 30 index/update. Here are last few steps of docker file.</p>
  
  <pre><code>...
  ...
  ...
  RUN service postgresql start &amp;&amp; \
      sudo -u postgres psql postgres -tAc "SELECT 1 FROM pg_roles WHERE rolname='nominatim'" | grep -q 1 || sudo -u postgres createuser -s nominatim &amp;&amp; \
      sudo -u postgres psql postgres -tAc "SELECT 1 FROM pg_roles WHERE rolname='www-data'" | grep -q 1 || sudo -u postgres createuser -SDR www-data &amp;&amp; \
      sudo -u postgres psql postgres -c "DROP DATABASE IF EXISTS nominatim" &amp;&amp; \
      useradd -m -p password1234 nominatim &amp;&amp; \
      chown -R nominatim:nominatim ./src &amp;&amp; \
      sudo -u nominatim ./src/build/utils/setup.php --osm-file /app/src/data.osm.pbf --all --threads 6 --osm2pgsql-cache 20000 &amp;&amp; \
      service postgresql stop
  
  EXPOSE 5432
  EXPOSE 8080
  
  COPY start.sh /app/start.sh
  CMD /app/start.sh
  </code></pre>
  
  <p>My question: Are <a href="https://wiki.openstreetmap.org/wiki/Nominatim/Development_overview#Indexing.2Faddress_calculation" rel="nofollow noreferrer">rank 30</a> updates so critical for geocoding? 
  If I restart postgresql at this stage of installation, would nominatim api be functional? 
  My current install is for the test purpose and I just want to checkout nominatim local. </p>