diff --git a/docker/create_env.sh b/docker/create_env.sh
index 89c976b..2dc2585 100755
--- a/docker/create_env.sh
+++ b/docker/create_env.sh
@@ -1,3 +1,3 @@
-#!/bin/sh
+#!/bin/bash
 
 declare -p | grep -Ev 'BASHOPTS|BASH_VERSINFO|EUID|PPID|SHELLOPTS|UID' > /root/get_env.sh