Deploying Binderhub with Quay container registry

I am trying to deploy BinderHub using a custom registry (Quay) and the documentation is giving me some trouble. Particularly the section about a “token url” as the Quay api seems to have deprecated its use of access tokens in place of robot accounts. Has anyone been able to deploy BinderHub with a Quay registry? Any help on the configuration would be appreciated, thanks.