[mod] jellyfin comment

jellyfin/docker-compose.yml

@@ -4,6 +4,7 @@ services:
     image: jellyfin/jellyfin
     container_name: jellyfin
     user: 1000:100
+    # https://github.com/jellyfin-archive/jellyfin-docs/blob/master/general/administration/hardware-acceleration.md#hardware-acceleration-on-docker-linux
     group_add:
       - 107
     network_mode: "host"