How to setup a multi-tenant app in laravel cloud to support custom domain for each organization on top of their subdomain?

Laravel cloud support wildcard subdomain & SSL certificate generation which is good. But we would like to allow our customers to add custom domain on top of their subdomain. Does this supported by Laravel Cloud? If so, is there any guide, doc or blog post.

Although we already implemented this using caddy server in our Digitalocean droplet. I was wondering if this could be done by Laravel Cloud as well?