diff --git a/Dockerfile b/Dockerfile
index 5718276..a6bf709 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -5,8 +5,7 @@ echo http://dl-4.alpinelinux.org/alpine/edge/testing >> /etc/apk/repositories &&
 apk add --no-cache mongodb && \
 rm /usr/bin/mongosniff /usr/bin/mongoperf
 
-VOLUME /data/db
-EXPOSE 27017 28017
+VOLUME /data/db /data/configdb
 
 COPY run.sh /root
 ENTRYPOINT [ "/root/run.sh" ]