add demo to readme

Author: eunomie

README.md

@@ -4,7 +4,8 @@
 
 _This was initially created for the October 2024 [Docker](https://docker.com) Hackathon_
 
-![demo](https://eunomie.github.io/docker-runx/assets/docker_runx.mp4)
+
+https://github.com/user-attachments/assets/8c3e9d91-9ae3-430d-9ce1-75334b7e38b6
 
 * [Main Usage](#main-usage)
 * [Reference](#reference)