diff --git a/src/zmb-ad-join/constants-service.conf b/src/zmb-ad-join/constants-service.conf
new file mode 100644
index 0000000..de68731
--- /dev/null
+++ b/src/zmb-ad-join/constants-service.conf
@@ -0,0 +1,22 @@
+#!/bin/bash
+
+# Authors:
+# (C) 2021 Idea an concept by Christian Zengel <christian@sysops.de>
+# (C) 2021 Script design and prototype by Markus Helmke <m.helmke@nettwarker.de>
+# (C) 2021 Script rework and documentation by Thorsten Spille <thorsten@spille-edv.de>
+
+# This file contains the project constants on service level
+
+# Debian Version, which will be installed
+LXC_TEMPLATE_VERSION="debian-11-standard"
+
+# Create sharefs mountpoint
+LXC_MP="0"
+
+# Create unprivileged container
+LXC_UNPRIVILEGED="0"
+
+# enable nesting feature
+LXC_NESTING="1"
+
+OPTIONAL_FEATURES=(wsdd splitdns)