Jellyfin, the server, will always start when the server boots. If you want an icon to access Jellyfin in your browser, you will have to manually create a shortcut with your server's URL.
Jellyfin 10.10.7 (Docker)
Ubuntu 24.04.2 LTS w/HWE
Intel i3 12100
Intel Arc A380
OS drive - SK Hynix P41 1TB
Storage
4x WD Red Pro 6TB CMR in RAIDZ1