hi
@elegant-memory-40145 -- at present, we don't have install instructions from a purely offline install yet. our first step was to allow for running offline once installed, so as noted by Justin and as you have found, we have documentation to get into a stage where you could copy an install into an offline setup.
we have
https://github.com/rancher-sandbox/rancher-desktop/issues/888 in our backlog to work on, which ties into plans tied to installer improvements but we have some other work to tackle first. it's on many people's wishlist so we're aware of the demand, so feel free to vote on that feature request.