*** a/src/Kernel.php
--- b/src/Kernel.php
@@ -8,6 +8,21 @@ class Kernel extends BaseKernel
 use Symfony\Component\HttpKernel\Kernel as BaseKernel;
 
 class Kernel extends BaseKernel
 {
     use MicroKernelTrait;
+
+    public function getDataDir(): string
+    {
+        return '@dataDir@';
+    }
+
+    public function getCacheDir(): string
+    {
+        return $this->getDataDir() . '/var/cache/' . $this->getEnvironment();
+    }
+
+    public function getLogDir(): string
+    {
+        return $this->getDataDir() . '/var/logs';
+    }
 }