diff --git a/docs/hassio_addon_tutorial.md b/docs/hassio_addon_tutorial.md
index 585c8d59..f1dde49d 100644
--- a/docs/hassio_addon_tutorial.md
+++ b/docs/hassio_addon_tutorial.md
@@ -56,6 +56,8 @@ CMD [ "/run.sh" ]
 
 `run.sh`:
 ```shell
+#!/usr/bin/with-contenv bashio
+
 echo Hello world!
 ```
 Make sure your editor is using UNIX-like line breaks (LF), not Dos/Windows (CRLF).