Add auto-register the container.

It helps get rid of errors related to different $container instances after autowiring.

src/Container.php

@@ -8,7 +8,7 @@
  * Author Email: [email protected]
  * Author Site: https://wp-yoda.com/en/
  *
- * Version: 0.2.3
+ * Version: 0.2.4
  * Source Code: https://github.com/renakdup/simple-php-dic
  *
  * Licence: MIT License
@@ -95,6 +95,14 @@ class Container implements ContainerInterface {
 	 */
 	protected array $reflection_cache = [];
 
+	public function __construct() {
+		// Auto-register the container
+		$this->resolved = [
+			self::class => $this,
+			ContainerInterface::class => $this,
+		];
+	}
+
 	/**
 	 * Set service to the container. Allows to set configurable services
 	 * using factory "function () {}" as passed service.

tests/ContainerTest.php

@@ -96,14 +96,14 @@ public function test_get__create_not_bound_service() {
 		self::assertEquals( new SimpleClass(), $this->container->get( SimpleClass::class ) );
 	}
 
-	public function test_get__check_singleton_for_not_bounded() {
+	public function test_get__singleton_check_for_not_bounded() {
 		self::assertSame(
 			$this->container->get( SimpleClass::class ),
 			$this->container->get( SimpleClass::class )
 		);
 	}
 
-	public function test_get__check_changing_singleton_property() {
+	public function test_get__singleton_check_changing_property() {
 		$this->container->set( $name = 'service', function () {
 			$obj        = new stdClass();
 			$obj->title = 'first title';
@@ -130,6 +130,14 @@ public function test_get__singleton_for_resolved_child_dependencies() {
 		);
 	}
 
+	public function test_get__singleton_autoregister_container() {
+		$obj = $this->container->get( Container::class );
+		$obj2 = $this->container->get( ContainerInterface::class );
+
+		self::assertSame( $this->container, $obj );
+		self::assertSame( $this->container, $obj2 );
+	}
+
 	public function test_get__autowiring() {
 		$expected = new SimpleClass();
 		$this->container->set( $name = SimpleClass::class, SimpleClass::class );