allow to login even update is pending

app/Http/Middleware/RedirectToSetup.php

@@ -23,6 +23,8 @@ class RedirectToSetup
             $user = $request->user();
             if ($user && $user->isAdmin()) {
                 return redirect('/setup/update');
+            } elseif ($request->is('auth/login')) {
+                return $next($request);
             } else {
                 abort(503);
             }

app/Providers/ViewServiceProvider.php

@@ -5,6 +5,7 @@ namespace App\Providers;
 use App\Http\View\Composers;
 use App\Services\Webpack;
 use Illuminate\Support\ServiceProvider;
+use Illuminate\Support\Str;
 use View;
 
 class ViewServiceProvider extends ServiceProvider
@@ -66,12 +67,13 @@ class ViewServiceProvider extends ServiceProvider
         View::composer('shared.foot', Composers\FootComposer::class);
 
         View::composer(['errors.*', 'setup.*'], function ($view) use ($webpack) {
-            $view->with([
-                'styles' => [
-                    $webpack->url('spectre.css'),
-                ],
-                'scripts' => [],
-            ]);
+            // @codeCoverageIgnoreStart
+            if (Str::startsWith(config('app.asset.env'), 'dev')) {
+                $view->with(['scripts' => [$webpack->url('spectre.js')]]);
+            } else {
+                $view->with('styles', [$webpack->url('spectre.css')]);
+            }
+            // @codeCoverageIgnoreEnd
         });
 
         View::composer('auth.oauth', function ($view) {

resources/views/errors/503.twig

@@ -3,7 +3,16 @@
 {% block title %}503 Service Unavailable{% endblock %}
 
 {% block message %}
+  <link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/@fortawesome/fontawesome-free@5.13.0/css/all.min.css">
   <p>
     {{ trans('errors.exception.detail', {msg: exception.message ?: trans('errors.http.msg-503')}) }}
   </p>
+  {% if not auth_check() %}
+    <div class="mt-5">
+      <a href="{{ url('/auth/login') }}" class="btn btn-primary">
+        <i class="icon fas fa-sign-in-alt mr-1"></i>
+        {{ trans('general.login') }}
+      </a>
+    </div>
+  {% endif %}
 {% endblock %}

tests/HttpTest/MiddlewareTest/RedirectToSetupTest.php

@@ -17,6 +17,7 @@ class RedirectToSetupTest extends TestCase
         $current = config('app.version');
         config(['app.version' => '100.0.0']);
         $this->get('/')->assertStatus(503);
+        $this->get('/auth/login')->assertViewIs('auth.login');
         $this->actingAs($superAdmin)->get('/')->assertRedirect('/setup/update');
         config(['app.version' => $current]);