add adminer to docker-compose

docker-compose.yml

@@ -29,6 +29,12 @@ services:
             MYSQL_DATABASE: 'mapguesser'
             MYSQL_USER: 'mapguesser'
             MYSQL_PASSWORD: 'mapguesser'
+    adminer:
+        image: adminer:4.8.1-standalone
+        ports:
+        - 9090:8080
+        environment:
+            - ADMINER_DEFAULT_SERVER=mariadb
     mail:
         image: marcopas/docker-mailslurper:latest
         ports:

src/Controller/LoginController.php

@@ -270,7 +270,7 @@ class LoginController
     {
         if ($this->request->user() !== null) {
             $this->deleteRedirectUrl();
-            return new Redirect($this->redirectUrl, IRedirect::TEMPORARY);
+            return new JsonContent(['redirect' => ['target' => '/' . $this->redirectUrl]]);
         }
 
         $user = $this->userRepository->getByEmail($this->request->post('email'));