Is it possible to associate more than one custom domain with the same GitHub user account? I would like to use one custom domain for my personal page and another custom domain for a project page.
Specifically, I would like www.deeplearningbook.org to show the GitHub pages for the goodfeli/book project, and www.iangoodfellow.com to show the GitHub pages for the goodfeli/goodfeli.github.io user page. (And if I can be ambitious, I'd like blog.iangoodfellow.com to show the GitHub pages for goodfeli/blog)
I have tried a few different ways to set them up, and everything I have done has ended up with one URL or the other working but not both.
My current setup is a huge mess, but since a commenter asked me what my name records currently are:
iangoodfellow.com: I deleted all name records after the last failure. namecheap filled in a default parking page thing. I deleted the custom domain field from the goodfeli/goodfeli.github.io repository on github. Strangely, http://goodfeli.github.io successfully loads but https://goodfeli.github.io redirects to the broken www.iangoodfellow.com parking page. I'm not very happy that github is doing that... I didn't realize that taking down goodfeli.github.io was a possible failure mode here.
deeplearningbook.org: I doubt this is the correct thing to do, but it's the only thing I've been able to get to work so far: Redirect domain: deeplearningbook.org -> https://www.deeplearningbook.org A record @ 192.30.252.153 A record @ 192.30.252.154 CNAME Record www goodfeli.github.io.
It's that last CNAME record that I think is the problem. Having the goodfeli.github.io CNAME record for www.deeplearningbook.org prevents me from linking a different domain to the goodfeli.github.io personal page. I haven't been able to figure out how to link www.deeplearningbook.org specifically to the goodfeli.github.io/dlbook project page though.
