An option to check file system access permissions in a Thin Client/running deluged in Docker scenario might be useful, e.g. in Preference -> Downloads -> "Check Permissions".
I just wasted hours trying to get v2.0.3 running in a Docker container because I was not sure if I had a firewall issue or a permission issue (file permissions looked right, and were indeed fine all the time), so this would have made debugging a lot easier. Maybe anyone else find it useful?
Turns out I just had to re-add the torrent I was testing with because it had a (previously assigned) wrong download path. Oh well...