A fresh install creates an empty containers root but leaves the rootless
daemon's own container state untouched. Restarting the daemon then runs its
container-restore pass, which resurrects the previous install's containers —
and Docker materialises each missing bind-mount source first, creating an empty
DIRECTORY even where the mount is a file.
That is the trigger behind the <app>.config stub directories: at 19:38:59 the
daemon re-created every missing mount source for a container built 40 minutes
earlier, runc then failed with "not a directory: Are you trying to mount a
directory onto a file", and the abandoned stubs collided with the install's own
copies 18 seconds later.
Add dockerRemoveStrandedContainers, run right after the rootless daemon
restart: remove containers whose compose project directory no longer exists, so
the next restart has nothing to resurrect. Scoped to project directories under
the LibrePortal containers root, so unrelated containers on the host are never
touched, and gated on the daemon answering.
Signed-off-by: librelad <librelad@digitalangels.vip>
