Add Hostname addon to include hostname in error event payload

composer.json

@@ -3,7 +3,7 @@
     "description": "PHP errors Catcher module for Hawk.so",
     "keywords": ["hawk", "php", "error", "catcher"],
     "type": "library",
-    "version": "2.2.4",
+    "version": "2.2.5",
     "license": "MIT",
     "require": {
         "ext-curl": "*",

src/Addons/Hostname.php

@@ -0,0 +1,35 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Hawk\Addons;
+
+/**
+ * Class Hostname
+ *
+ * @package Hawk\Addons
+ */
+class Hostname implements AddonInterface
+{
+    /**
+     * @inheritdoc
+     */
+    public function getName(): string
+    {
+        return 'env';
+    }
+
+    /**
+     * @inheritDoc
+     */
+    public function resolve(): array
+    {
+        $hostname = gethostname();
+
+        if ($hostname === false) {
+            return [];
+        }
+
+        return ['hostname' => $hostname];
+    }
+}

src/Catcher.php

@@ -5,6 +5,7 @@
 namespace Hawk;
 
 use Hawk\Addons\Headers;
+use Hawk\Addons\Hostname;
 use Hawk\Transport\CurlTransport;
 use Throwable;
 
@@ -154,6 +155,7 @@ private function __construct(array $options)
          */
         $builder = new EventPayloadBuilder($stacktraceBuilder);
         $builder->registerAddon(new Headers());
+        $builder->registerAddon(new Hostname());
 
         $transport = new CurlTransport($options->getUrl());