postgres extension configurable

entrypoint.sh

@@ -90,8 +90,11 @@ postgresql_init() {
 
   psql -h$DB_HOST -p $DB_PORT -U$DB_ROOT_USER -tc "GRANT ALL PRIVILEGES ON DATABASE $DB_DATABASE to $DB_USER;" > /dev/null
 
-  # TODO make this configurable
-  psql -h$DB_HOST -p $DB_PORT -U$DB_ROOT_USER -d $DB_DATABASE -tc "CREATE EXTENSION pg_trgm;" > /dev/null 2> /dev/null || true
+
+  # add extension
+  if [ -n "$PG_EXTENSIONS" ]; then
+    psql -h$DB_HOST -p $DB_PORT -U$DB_ROOT_USER -d $DB_DATABASE -tc "CREATE EXTENSION $PG_EXTENSIONS;" > /dev/null 2> /dev/null || true
+  fi
 }
 
 postgresql_auto_backup() {