[keycloak-user] Keycloak behind two different proxies

Hello, I have a use case where Keycloak needs to be deployed behind two different proxies: UserA —> ProxyA —> Keycloak <— ProxyB <— UserB, could you help to tell how to make it work? I followed the installation guide and got it work for UserA/ProxyA or UserB/ProxyB, but cannot make it work for both. This major problem is, rather than two different providers for UserA/ProxyA and UserB/ProxyB respectively, I can only set one fixed provider. Can anyone shed some light? Thanks, Yang