add Behaviour

.gitignore

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+composer.lock
+/nbproject/
+/vendor/

composer.json

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+{
+    "name": "potter/environment",
+    "type": "library",
+    "license": "MIT",
+    "autoload": {
+        "psr-4": {
+            "Potter\\Environment\\": "src/Potter/Environment/"
+        }
+    },
+    "authors": [
+        {
+            "name": "Jay Potter",
+            "email": "j@ypotter.ca"
+        }
+    ],
+    "minimum-stability": "stable",
+    "require": {
+        "graham-campbell/result-type": ">=1.1.4",
+        "phpoption/phpoption": ">=1.9.5",
+        "potter/container": ">=0.0.1",
+        "symfony/polyfill-ctype": ">=1.37.0",
+        "symfony/polyfill-mbstring": ">=1.38.2",
+        "symfony/polyfill-php80": ">=1.37.0",
+        "vlucas/phpdotenv": ">=5.6.4"
+    }
+}

src/Potter/Environment/Behaviour.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Potter\Environment;
+
+use \Potter\Container;
+
+trait Behaviour 
+{
+    private static function addEnvironment(Container $container): void
+    {
+        $container->addShared(Environment::class, function () {
+            return Environment::createImmutable(getcwd());
+        });
+    }
+    
+    private static function addEnvironmentBehaviour(Container $container): void
+    {
+        static::addEnvironment($container);
+        self::getEnvironment($container)->required(['APPLICATION_NAME']);
+    }
+    
+    private static function getEnvironment(Container $container): Environment
+    {
+        return $container->get(Environment::class);
+    }
+    
+    private static function hasEnvironment(Container $container): bool
+    {
+        return $container->has(Environment::class);
+    }
+}

src/Potter/Environment/Environment.php

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+<?php
+
+declare(strict_types=1);
+
+namespace Potter\Environment;
+
+final class Environment 
+    extends \Dotenv\Dotenv
+{ }