I'm using the Syncthing image as an LXC container.

As soon as I add an lxc.idmap - like, any mapping - the container starts, but the webui is erroring out with 502. I'm trying to idmap the syncthing user, but basically setting any kind of idmap causes this.

The weird thing is, that running the syncthing command seemingly starts the app normally, but the webui is still not available and syncing doesn't happen. Id mapping shouldn't have any effect on the container itself...

Is there any error log I can look at?

lxc.idmap = u 0 100000 999
lxc.idmap = g 0 100000 999
lxc.idmap = u 999 1000 1
lxc.idmap = g 999 1000 1
lxc.idmap = u 1000 101000 64535
lxc.idmap = g 1000 101000 64535