Basic implemention of multiple selectable images for an egg

The admin side of this is quite ugly when creating/editing a server, but I'm not putting effort into that right now with React Admin soon™

app/Http/Controllers/Admin/Servers/CreateServerController.php

@@ -111,17 +111,19 @@ class CreateServerController extends Controller
      *
      * @throws \Illuminate\Validation\ValidationException
      * @throws \Pterodactyl\Exceptions\DisplayException
-     * @throws \Pterodactyl\Exceptions\Model\DataValidationException
-     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
      * @throws \Pterodactyl\Exceptions\Service\Deployment\NoViableAllocationException
      * @throws \Pterodactyl\Exceptions\Service\Deployment\NoViableNodeException
      * @throws \Throwable
      */
     public function store(ServerFormRequest $request)
     {
-        $server = $this->creationService->handle(
-            $request->except(['_token'])
-        );
+        $data = $request->except(['_token']);
+        if (!empty($data['custom_image'])) {
+            $data['image'] = $data['custom_image'];
+            unset($data['custom_image']);
+        }
+
+        $server = $this->creationService->handle($data);
 
         $this->alert->success(
             trans('admin/server.alerts.server_created')

app/Http/Controllers/Admin/ServersController.php

@@ -334,14 +334,19 @@ class ServersController extends Controller
      * @return \Illuminate\Http\RedirectResponse
      *
      * @throws \Illuminate\Validation\ValidationException
-     * @throws \Pterodactyl\Exceptions\Repository\RecordNotFoundException
      */
     public function saveStartup(Request $request, Server $server)
     {
+        $data = $request->except('_token');
+        if (!empty($data['custom_docker_image'])) {
+            $data['docker_image'] = $data['custom_docker_image'];
+            unset($data['custom_docker_image']);
+        }
+
         try {
             $this->startupModificationService
                 ->setUserLevel(User::USER_LEVEL_ADMIN)
-                ->handle($server, $request->except('_token'));
+                ->handle($server, $data);
         } catch (DataValidationException $exception) {
             throw new ValidationException($exception->validator);
         }

app/Http/Requests/Admin/ServerFormRequest.php

@@ -1,11 +1,4 @@
 <?php
-/**
- * Pterodactyl - Panel
- * Copyright (c) 2015 - 2017 Dane Everitt <dane@daneeveritt.com>.
- *
- * This software is licensed under the terms of the MIT license.
- * https://opensource.org/licenses/MIT
- */
 
 namespace Pterodactyl\Http\Requests\Admin;
 
@@ -23,6 +16,7 @@ class ServerFormRequest extends AdminFormRequest
     {
         $rules = Server::getRules();
         $rules['description'][] = 'nullable';
+        $rules['custom_image'] = 'sometimes|nullable|string';
 
         return $rules;
     }