diff --git a/docker-orchestration/osrm-data-docker/Dockerfile b/docker-orchestration/osrm-data-docker/Dockerfile
index 79d9fed3a..1de0db64e 100644
--- a/docker-orchestration/osrm-data-docker/Dockerfile
+++ b/docker-orchestration/osrm-data-docker/Dockerfile
@@ -10,4 +10,6 @@ ENV MAPDATA_PATH ${MAPDATA_PATH}
 WORKDIR /mapdata
 ADD ${MAPDATA_PATH}/* /mapdata/
 
+# make the folder mountable
+VOLUME /mapdata