It is not possible to build "rh-sso" with -Dproduct. There is
The reason is that there is provided dependency https://github.com/keycloak/keycloak/blob/master/adapters/oidc/spring-boot/pom.xml#L57-L61
But keycloak-jetty93-adapter is not built at all with 'product' profile: https://github.com/keycloak/keycloak/blob/master/adapters/oidc/jetty/pom.xml#L33-L37
I'm not sure what would be correct fix, whether include module jetty9.3 into 'product' profile or for 'product' profile declare keycloak-jetty92-adapter and remain keycloak-jetty93-adapter just for community.