diff --git a/src/Bootstrap.php b/src/Bootstrap.php
new file mode 100644
index 00000000..079bc7d8
--- /dev/null
+++ b/src/Bootstrap.php
@@ -0,0 +1,75 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Buggregator\Trap;
+
+use Buggregator\Trap\Service\Config\ConfigLoader;
+use Buggregator\Trap\Service\Container;
+
+/**
+ * Build the container based on the configuration.
+ *
+ * @internal
+ */
+final class Bootstrap
+{
+    private function __construct(
+        private Container $container,
+    ) {
+    }
+
+    public static function init(Container $container = new Container()): self
+    {
+        return new self($container);
+    }
+
+    public function finish(): Container
+    {
+        $c = $this->container;
+        unset($this->container);
+
+        return $c;
+    }
+
+    /**
+     * @param non-empty-string|null $xml File or XML content
+     */
+    public function withConfig(
+        ?string $xml = null,
+        array $inputOptions = [],
+        array $inputArguments = [],
+        array $environment = [],
+    ): self {
+        $args = [
+            'env' => $environment,
+            'inputArguments' => $inputArguments,
+            'inputOptions' => $inputOptions,
+        ];
+
+        // XML config file
+        $xml === null or $args['xml'] = $this->readXml($xml);
+
+        // Register bindings
+        $this->container->bind(ConfigLoader::class, $args);
+
+        return $this;
+    }
+
+    private function readXml(string $fileOrContent): string
+    {
+        // Load content
+        if (\str_starts_with($fileOrContent, '<?xml')) {
+            $xml = $fileOrContent;
+        } else {
+            \file_exists($fileOrContent) or throw new \InvalidArgumentException('Config file not found.');
+            $xml = \file_get_contents($fileOrContent);
+            $xml === false and throw new \RuntimeException('Failed to read config file.');
+        }
+
+        // Validate Schema
+        // todo
+
+        return $xml;
+    }
+}
diff --git a/src/Command/Run.php b/src/Command/Run.php
index a86c5f29..1ca6547a 100644
--- a/src/Command/Run.php
+++ b/src/Command/Run.php
@@ -5,11 +5,11 @@
 namespace Buggregator\Trap\Command;
 
 use Buggregator\Trap\Application;
+use Buggregator\Trap\Bootstrap;
 use Buggregator\Trap\Config\Server\SocketServer;
 use Buggregator\Trap\Info;
 use Buggregator\Trap\Logger;
 use Buggregator\Trap\Sender;
-use Buggregator\Trap\Service\Container;
 use Symfony\Component\Console\Attribute\AsCommand;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Command\SignalableCommandInterface;
@@ -83,7 +83,12 @@ protected function execute(
 
             $registry = $this->createRegistry($output);
 
-            $container = new Container();
+            $container = Bootstrap::init()->withConfig(
+                xml: \dirname(__DIR__, 2) . '/trap.xml',
+                inputOptions: $input->getOptions(),
+                inputArguments: $input->getArguments(),
+                environment: \getenv(),
+            )->finish();
             $container->set($registry);
             $container->set($input, InputInterface::class);
             $container->set(new Logger($output));
diff --git a/src/Config/Server/Frontend.php b/src/Config/Server/Frontend.php
index 76ad55bb..8ad3bb60 100644
--- a/src/Config/Server/Frontend.php
+++ b/src/Config/Server/Frontend.php
@@ -4,7 +4,7 @@
 
 namespace Buggregator\Trap\Config\Server;
 
-use Buggregator\Trap\Service\Config\CliOption;
+use Buggregator\Trap\Service\Config\InputOption;
 use Buggregator\Trap\Service\Config\Env;
 use Buggregator\Trap\Service\Config\XPath;
 
@@ -15,7 +15,7 @@ final class Frontend
 {
     /** @var int<1, 65535> */
     #[Env('TRAP_FRONTEND_PORT')]
-    #[CliOption('ui')]
+    #[InputOption('ui')]
     #[XPath('/trap/frontend/@port')]
     public int $port = 8000;
 }
diff --git a/src/Service/Config/ConfigLoader.php b/src/Service/Config/ConfigLoader.php
index 5b6b1196..625c6bc5 100644
--- a/src/Service/Config/ConfigLoader.php
+++ b/src/Service/Config/ConfigLoader.php
@@ -5,7 +5,6 @@
 namespace Buggregator\Trap\Service\Config;
 
 use Buggregator\Trap\Logger;
-use Symfony\Component\Console\Input\InputInterface;
 
 /**
  * @internal
@@ -15,31 +14,23 @@ final class ConfigLoader
     private \SimpleXMLElement|null $xml = null;
 
     /**
-     * @param null|callable(): non-empty-string $xmlProvider
      * @psalm-suppress RiskyTruthyFalsyComparison
      */
     public function __construct(
-        private Logger $logger,
-        private ?InputInterface $cliInput,
-        ?callable $xmlProvider = null,
-    )
-    {
-        // Check SimpleXML extension
-        if (!\extension_loaded('simplexml')) {
-            return;
-        }
-
-        try {
-            $xml = $xmlProvider === null
-                ? \file_get_contents(\dirname(__DIR__, 3) . '/trap.xml')
-                : $xmlProvider();
-        } catch (\Throwable) {
-            return;
+        private readonly Logger $logger,
+        private readonly array $env = [],
+        private readonly array $inputArguments = [],
+        private readonly array $inputOptions = [],
+        ?string $xml = null,
+    ) {
+        if (\is_string($xml)) {
+            // Check SimpleXML extension
+            if (!\extension_loaded('simplexml')) {
+                $logger->info('SimpleXML extension is not loaded.');
+            } else {
+                $this->xml = \simplexml_load_string($xml, options: \LIBXML_NOERROR) ?: null;
+            }
         }
-
-        $this->xml = \is_string($xml)
-            ? (\simplexml_load_string($xml, options: \LIBXML_NOERROR) ?: null)
-            : null;
     }
 
     public function hidrate(object $config): void
@@ -69,8 +60,9 @@ private function injectValue(object $config, \ReflectionProperty $property, arra
                 /** @var mixed $value */
                 $value = match (true) {
                     $attribute instanceof XPath => $this->xml?->xpath($attribute->path)[$attribute->key],
-                    $attribute instanceof Env => \getenv($attribute->name) === false ? null : \getenv($attribute->name),
-                    $attribute instanceof CliOption => $this->cliInput?->getOption($attribute->name),
+                    $attribute instanceof Env => $this->env[$attribute->name] ?? null,
+                    $attribute instanceof InputOption => $this->inputOptions[$attribute->name] ?? null,
+                    $attribute instanceof InputArgument => $this->inputArguments[$attribute->name] ?? null,
                     default => null,
                 };
 
diff --git a/src/Service/Config/InputArgument.php b/src/Service/Config/InputArgument.php
new file mode 100644
index 00000000..ff863541
--- /dev/null
+++ b/src/Service/Config/InputArgument.php
@@ -0,0 +1,17 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Buggregator\Trap\Service\Config;
+
+/**
+ * @internal
+ */
+#[\Attribute(\Attribute::TARGET_PROPERTY)]
+final class InputArgument implements ConfigAttribute
+{
+    public function __construct(
+        public string $name,
+    ) {
+    }
+}
diff --git a/src/Service/Config/CliOption.php b/src/Service/Config/InputOption.php
similarity index 81%
rename from src/Service/Config/CliOption.php
rename to src/Service/Config/InputOption.php
index b631062a..26705348 100644
--- a/src/Service/Config/CliOption.php
+++ b/src/Service/Config/InputOption.php
@@ -8,7 +8,7 @@
  * @internal
  */
 #[\Attribute(\Attribute::TARGET_PROPERTY)]
-final class CliOption implements ConfigAttribute
+final class InputOption implements ConfigAttribute
 {
     public function __construct(
         public string $name,
diff --git a/src/Service/Container.php b/src/Service/Container.php
index 90508388..9613e511 100644
--- a/src/Service/Container.php
+++ b/src/Service/Container.php
@@ -7,6 +7,7 @@
 use Buggregator\Trap\Destroyable;
 use Buggregator\Trap\Service\Config\ConfigLoader;
 use Psr\Container\ContainerInterface;
+use Psr\Container\NotFoundExceptionInterface;
 use Yiisoft\Injector\Injector;
 
 /**
@@ -81,16 +82,19 @@ public function make(string $class, array $arguments = []): object
     {
         $binding = $this->factory[$class] ?? null;
 
-        $result = match(true) {
-            $binding === null => $this->injector->make($class, $arguments),
-            \is_array($binding) => $this->injector->make($class, \array_merge($binding, $arguments)),
-            default => ($this->factory[$class])($this),
-        };
+        if ($binding instanceof \Closure) {
+            $result = $binding($this);
+        } else {
+            try {
+                $result = $this->injector->make($class, \array_merge((array) $binding, $arguments));
+            } catch (\Throwable $e) {
+                throw new class(previous: $e) extends \RuntimeException implements NotFoundExceptionInterface {};
+            }
+        }
 
         \assert($result instanceof $class, "Created object must be instance of {$class}.");
 
         // Detect Trap related types
-
         // Configs
         if (\str_starts_with($class, 'Buggregator\\Trap\\Config\\')) {
             // Hydrate config
diff --git a/tests/Unit/Service/Config/ConfigLoaderTest.php b/tests/Unit/Service/Config/ConfigLoaderTest.php
index b33ed0e4..781ceb07 100644
--- a/tests/Unit/Service/Config/ConfigLoaderTest.php
+++ b/tests/Unit/Service/Config/ConfigLoaderTest.php
@@ -4,8 +4,11 @@
 
 namespace Buggregator\Trap\Tests\Unit\Service\Config;
 
-use Buggregator\Trap\Logger;
+use Buggregator\Trap\Bootstrap;
 use Buggregator\Trap\Service\Config\ConfigLoader;
+use Buggregator\Trap\Service\Config\Env;
+use Buggregator\Trap\Service\Config\InputArgument;
+use Buggregator\Trap\Service\Config\InputOption;
 use Buggregator\Trap\Service\Config\XPath;
 use PHPUnit\Framework\TestCase;
 
@@ -22,8 +25,9 @@ public function testSimpleHydration(): void
             public string $myString;
             #[XPath('/trap/container/MyFloat/@value')]
             public float $myFloat;
+            #[XPath('/trap/container/Nothing/@value')]
+            public float $none = 3.14;
         };
-
         $xml = <<<'XML'
             <?xml version="1.0"?>
             <trap my-string="foo-bar">
@@ -34,12 +38,58 @@ public function testSimpleHydration(): void
             </trap>
             XML;
 
-        $loader = new ConfigLoader(new Logger(), null, fn() => $xml);
-        $loader->hidrate($dto);
+        $this->createConfigLoader(xml: $xml)->hidrate($dto);
 
         self::assertTrue($dto->myBool);
         self::assertSame(200, $dto->myInt);
         self::assertSame('foo-bar', $dto->myString);
         self::assertSame(42.0, $dto->myFloat);
+        self::assertSame(3.14, $dto->none);
+    }
+
+    public function testAttributesOrder(): void
+    {
+        $dto = new class() {
+            #[XPath('/test/@foo')]
+            #[InputArgument('test')]
+            #[InputOption('test')]
+            #[Env('test')]
+            public int $int1;
+            #[Env('test')]
+            #[InputArgument('test')]
+            #[XPath('/test/@foo')]
+            #[InputOption('test')]
+            public int $int2;
+            #[InputArgument('test')]
+            #[Env('test')]
+            #[XPath('/test/@foo')]
+            #[InputOption('test')]
+            public int $int3;
+        };
+        $xml = <<<'XML'
+            <?xml version="1.0"?>
+            <test foo="42">
+            </test>
+            XML;
+
+        $this
+            ->createConfigLoader(xml: $xml, opts: ['test' => 13], args: ['test' => 69], env: ['test' => 0])
+            ->hidrate($dto);
+
+        self::assertSame(42, $dto->int1);
+        self::assertSame(0, $dto->int2);
+        self::assertSame(69, $dto->int3);
+    }
+
+    private function createConfigLoader(
+        ?string $xml = null,
+        array $opts = [],
+        array $args = [],
+        array $env = [],
+    ): ConfigLoader {
+        return Bootstrap::init()
+            ->withConfig($xml, $opts, $args, $env)
+            ->finish()
+            ->get(ConfigLoader::class);
     }
 }