It appears that the watchtower image periodically updates the storagenode by adding a new image and running that. It leaves the old images behind. When I try to delete any of these images, I get the complaint that the filesystem is mounted read-only.
Here’s an example,
(HTTP code 500) server error - error deleting lease: write /var/lib/desktop-containerd/daemon/io.containerd.metadata.v1.bolt/meta.db: read-only file system: unknown
It’s not clear what that line is referring to. There is no directory on my Mac with that name.