revert 13-master POSTGIS_GIT_HASH for a last working

Author: ImreSamu

15beta3-master/Dockerfile

@@ -230,7 +230,7 @@ RUN ogr2ogr --formats | grep -q "PostgreSQL/PostGIS" && exit 0 \
 
 # install postgis
 ENV POSTGIS_VERSION master
-ENV POSTGIS_GIT_HASH 8e0c2bcdf56f4878d545aaf49d323308bc4856dc
+ENV POSTGIS_GIT_HASH d31888c038285d36b460e34773e5dddece27d585
 
 RUN set -ex \
     && apt-get update \