anchor.diff:  
   # Initial import
   USER root
  +ARG OSM2PGSQL_CACHE=24000
   RUN service postgresql start && \
       sudo -u nominatim ${USERHOME}/Nominatim/build/utils/setup.php \
         --osm-file /srv/nominatim/src/data.osm.pbf \
  
positive.code: RUN apt-get -qq update
  
  # Set build variables
  ARG BUILD_THREADS=16
  ARG BUILD_MEMORY=32GB
  ARG PGSQL_VERSION=9.6
  ARG POSTGIS_VERSION=2.3
  ARG OSM2PGSQL_CACHE=24000
  
  # Set import variables
  ARG PBF_URL=https://planet.osm.org/pbf/planet-latest.osm.pbf
  ARG REPLICATION_URL=https://planet.osm.org/replication/hour/
  ARG IMPORT_ADMINISTRATIVE=false
  
  # Install build dependencies
  USER root
  
negative.code: 
  # Install Nominatim
  USER nominatim
  ARG REPLICATION_URL=https://planet.osm.org/replication/hour/
  WORKDIR /srv/nominatim
  RUN git clone --recursive git://github.com/openstreetmap/Nominatim.git
  RUN echo $'<?php\n\
  