[BUG] Document lack of unraid nvidia support

[thelamer]

Will give some time for upstream to see if they can figure something out, but in general the unraid nvidia container toolkit seems to be missing many file link ins and proper remapping.

The base they have in there will work for cuda and accelerated workloads, but without going priv and manually mounting in a bunch of stuff the tools needed for 555+ drivers and wayland are missing while they are in standard distros.

A good summary here:

linuxserver/docker-baseimage-selkies#146 (comment)

[github-actions]

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