Custom theme for Keycloak
Enable auth for WildFly app server hosting keycloak, so that we can deploy our custom extensions using gradle plugin
$ docker-compose exec keycloak bash
$ cd /opt/jboss/keycloak/bin
$ ./add-user.sh -u admin -p admin -r ManagementRealm
$ ./jboss-cli.sh --connect --controller=localhost:10090 --command="security enable-http-auth-management"