diff --git a/.env.sample b/.env.sample
index a6bfd2b..cc18a7f 100644
--- a/.env.sample
+++ b/.env.sample
@@ -1,5 +1,7 @@
 TYPE=bigbluebutton
 
+# STACK_NAME=<stackname> # only use for swarm debug
+
 DOMAIN=bigbluebutton.example.com
 
 ## Domain aliases