I’d just drop the root slash completely, I think it’s implied by the first grey slash.
Personally, at least on a docker/server install, I’d drop (rather than collapse) everything before the meaningful level. In other words, the root folder would be “Folder / test”. That’s because the internal mount point in the docker container doesn’t mean anything to someone perusing the web UI (see Open asset in external application - #15 by avdp) Perhaps the full path could be a mouse-over or something.