update readme

demo-keycloak-runner/README.md

@@ -9,6 +9,14 @@ To start docker running keycloak
 bash docker-keycloak.sh
 ```
 
+Go to http://localhost:8080 and login via `admin:admin`.
+
+Create a new realm `demorealm`.
+
+Create a new client with client-id=`react-app`, leave everything else untouched (openid-connect).
+
+Create a new user and set his credentials.
+
 ----
 ## Keycloak theming
 

demo-resource-server/src/main/java/ru/digitalbanana/demoresourceserver/web/controller/UserInfoController.java

@@ -1,10 +1,6 @@
 package ru.digitalbanana.demoresourceserver.web.controller;
 
-import java.util.Collections;
 import java.util.List;
-import java.util.Map;
-import java.util.Objects;
-import java.util.Set;
 import java.util.stream.Collectors;
 import java.util.stream.StreamSupport;
 
@@ -13,7 +9,6 @@ import org.springframework.security.core.annotation.AuthenticationPrincipal;
 import org.springframework.security.oauth2.jwt.Jwt;
 import org.springframework.web.bind.annotation.CrossOrigin;
 import org.springframework.web.bind.annotation.GetMapping;
-import org.springframework.web.bind.annotation.PathVariable;
 import org.springframework.web.bind.annotation.RestController;
 
 import lombok.extern.slf4j.Slf4j;