diff --git a/docker_command.sh b/docker_command.sh
new file mode 100755
index 0000000..52e7824
--- /dev/null
+++ b/docker_command.sh
@@ -0,0 +1,7 @@
+#!/bin/sh
+#helper routine that creates user/group in docker container
+#necessary when using volumes and inputing -user into docker run
+groupadd -o -g $(id -g) -r $2
+useradd -o -u $(id -u) --create-home -r -g  $2 $1
+shift 2
+exec $@