[wildfly-dev] Adding jar to WAR from DeploymentProcessor

The Keycloak auth server allows third-parties to add providers using the ServiceLoader. To do this, you need to open Keycloak's auth-server.war and drop your jar into the WEB-INF/lib directory. I'd like to eliminate opening the WAR and have a DeploymentProcessor look in a particular directory and add the jar at deployment time. What is the cleanest way to do that? Bonus points if you tell me that I can treat the service provider jar as a deployment and let the user upload it via CLI. :-) Thanks, Stan