diff --git a/Dockerfile b/Dockerfile
index aa07a4f..2cbab43 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -19,7 +19,7 @@ ENV VARNISH_PORT 80
 EXPOSE 80
 
 # Expose volumes to be able to use data containers
-VOLUMES ["/var/lib/varnish", "/etc/varnish"]
+VOLUME ["/var/lib/varnish", "/etc/varnish"]
 
 ADD start.sh /start.sh
 CMD ["/start.sh"]