Implement Keystone environment deployments

app/Enums/BuildStrategy.php

@@ -0,0 +1,14 @@
+<?php
+
+namespace App\Enums;
+
+use App\Enums\Concerns\Arrayable;
+
+enum BuildStrategy: string
+{
+    use Arrayable;
+
+    case TARGET_SERVER = 'target_server';
+    case DEDICATED_BUILDER = 'dedicated_builder';
+    case EXTERNAL_REGISTRY = 'external_registry';
+}