diff --git a/.gitmodules b/.gitmodules
new file mode 100644
index 0000000..0e60dd9
--- /dev/null
+++ b/.gitmodules
@@ -0,0 +1,3 @@
+[submodule "common"]
+	path = common
+	url = ssh://git@git.digitalstudium.com:2222/digitalstudium/common_functions.git
diff --git a/common b/common
new file mode 160000
index 0000000..0414cc9
--- /dev/null
+++ b/common
@@ -0,0 +1 @@
+Subproject commit 0414cc9bdbd14526e57e42fec9a6294f0a97b7ed