[keycloak-user] Parameterizing keycloak.json?

Hi there, I set up a web application to use Keycloak. I added a keycloak.json file to configure the keycloak settings. In this file there is the auth-server-url and a path to a truststore. The keycloak.json file is packaged into the war file, of course. But I need to deploy the same war file to different servers, that should talk to different Keycloak-Servers. Is there a way to parameterize information in the keycloak.json file? Or can I configure overrides in a JBoss server? I know that I could configure the keycloak settings completely in the JBoss configuration, but I rather like the idea to have a config per app. Greetings, Malte