nikto

What version of Unraid are you running? There was a recent change to have nvidia support built-into unraid and I think it broke old docker setups for plex. I recently learned of this after it broke my setup just a few weeks ago. This requires a newer nvidia-driver plugin instead of the old nvidia-plugin that downloaded a mod'd version of unraid. I believe you need to be running one of the beta release candidates (unless something has changed) for the plugin to show up in community apps. I'm using Version: 6.9.0-rc2. Did you already apply this new setup?