diff --git a/for_build/DEBIAN/preinst b/for_build/DEBIAN/preinst
index 3e9b8e7ef..f9110ad6d 100644
--- a/for_build/DEBIAN/preinst
+++ b/for_build/DEBIAN/preinst
@@ -1,3 +1,6 @@
+#!/bin/sh
+set -e
+
 echo "Installing directory for configs..."
 sudo mkdir /etc/thingsboard-gateway
 sudo adduser --system --gecos "ThingsBoard-Gateway Service" --disabled-password --group --home /var/lib/thingsboard_gateway thingsboard_gateway