[Docker] Euro Truck Simulator 2 server not working

I am attempting create an ETS2 server using Docker on my Synology NAS. However, when I start the container, it displays "unable to start linuxGSM." I have correctly opened ports 27015 and 27016, and I can start ETS2 manually with SteamCMD without any issues with an ubuntu 24.04 container.
I have no issues writing in /data folder.