Syncthing synchronizes files across devices using secure, peer-to-peer replication. It mounts /mnt/user/Media for data sets and listens on GUI port 8384 plus sync ports 22000/21027.【F:tools/compose.yml†L409-L453】
lscr.io/linuxserver/syncthing:latest8384:8384, 22000:22000/tcp, 22000:22000/udp, 21027:21027/udpfrontend_netsyncthing_config:/config, /mnt/user/Media:/data1PUID, PGID, timezoneunless-stoppedhttp://<host>:8384; configure devices and folder shares there./data1 includes only directories you intend to sync; create subfolders for granular control.