Override Domain key in DUO pushinfo for LDAP outposts #26792

Is your feature request related to a problem?

When using the Docker compose setup, DUO pushinfo shows Domain=server:9000 during push notification challenges for LDAP-based applications. This is confusing to end users who expect it to match the domain they see during login.

Describe the solution you'd like

A way to override the Domain (or more generally add/change pushinfo sent to DUO) for at least LDAP outposts. Perhaps an environment variable that is passed through to the flow or similar.

Describe alternatives that you've considered

I could change the AUTHENTIK_HOST that the ldap outpost uses to use the public hostname of the server, but that creates a lot of extra hops when the LDAP outpost and the server are in the same compose stack.

Additional context

No response