Keycloak link with /auth

line 123 Keycloak: 
line 124 http://localhost:8081/auth

without /auth the link does not work, in our cases

setup_root.md

@@ -121,7 +121,7 @@ $ docker logs -f <container name>
 In default config, the running containers will be:
 
 * Keycloak: 
-    * http://localhost:8081
+    * http://localhost:8081/auth
 
       * The default keycloak username is *admin* and the password is *admin*.