Make service region configurable

config/services.yaml

@@ -5,6 +5,7 @@
 # https://symfony.com/doc/current/best_practices.html#use-parameters-for-application-configuration
 parameters:
     s3.storage_path: '%kernel.project_dir%/var/s3storage'
+    app.region: '%env(APP_REGION)%'
 
 services:
     # default configuration for services in *this* file
@@ -24,4 +25,5 @@ services:
     # please note that last definitions always *replace* previous ones
     App\Service\S3Service:
         arguments:
-            $storageBasePath: '%s3.storage_path%'
+            $storageBasePath: '%s3.storage_path%'
+            $region: '%app.region%'