diff --git a/app/src/Bootstrap/BootManager.php b/app/src/Bootstrap/BootManager.php
index 221ec6e..ab17611 100644
--- a/app/src/Bootstrap/BootManager.php
+++ b/app/src/Bootstrap/BootManager.php
@@ -14,7 +14,7 @@ class BootManager
             ...glob($configPath . '/*.php')
         );
 
-        if (self::enableContainerCompilation()) {
+        if (self::containerCompilationEnabled()) {
             $container->enableCompilation($cachePath);
         }
 
@@ -22,16 +22,18 @@ class BootManager
     }
 
     /** Determine if container compilation should be enabled. */
-    protected static function enableContainerCompilation(): bool
+    protected static function containerCompilationEnabled(): bool
     {
         if (filter_var(getenv('APP_DEBUG'), FILTER_VALIDATE_BOOL)) {
             return false;
         }
 
-        if (! filter_var(getenv('COMPILE_CONTAINER'), FILTER_VALIDATE_BOOL)) {
-            return false;
+        $compileContainer = getenv('COMPILE_CONTAINER');
+
+        if ($compileContainer === false) {
+            return true;
         }
 
-        return true;
+        return strtolower($compileContainer) !== 'false';
     }
 }
diff --git a/index.php b/index.php
index 7c11f10..6323471 100644
--- a/index.php
+++ b/index.php
@@ -2,7 +2,6 @@
 
 use App\Bootstrap\AppManager;
 use App\Bootstrap\BootManager;
-use DI\ContainerBuilder;
 use Dotenv\Dotenv;
 
 require __DIR__ . '/app/vendor/autoload.php';
diff --git a/tests/Bootstrap/BootManagerTest.php b/tests/Bootstrap/BootManagerTest.php
index ee2bd03..9ee9504 100644
--- a/tests/Bootstrap/BootManagerTest.php
+++ b/tests/Bootstrap/BootManagerTest.php
@@ -22,10 +22,9 @@ class BootManagerTest extends TestCase
     }
 
     /** @test */
-    public function it_caches_the_container_when_compile_container_is_true(): void
+    public function it_caches_the_container_by_default(): void
     {
-        putenv('APP_DEBUG=false');
-        putenv('COMPILE_CONTAINER=true');
+        putenv('COMPILE_CONTAINER=');
 
         $container = BootManager::createContainer(
             $this->filePath('app/config'),
@@ -37,9 +36,8 @@ class BootManagerTest extends TestCase
     }
 
     /** @test */
-    public function it_does_not_cache_the_container_when_compilation_is_explicitly_disabled(): void
+    public function it_does_not_cache_the_container_when_explicitly_disabled(): void
     {
-        putenv('APP_DEBUG=false');
         putenv('COMPILE_CONTAINER=false');
 
         $container = BootManager::createContainer(
@@ -55,7 +53,6 @@ class BootManagerTest extends TestCase
     public function it_does_not_cache_the_container_when_debug_is_enabled(): void
     {
         putenv('APP_DEBUG=true');
-        putenv('COMPILE_CONTAINER=true');
 
         $container = BootManager::createContainer(
             $this->filePath('app/config'),