diff --git a/artel/artel/tasks.py b/artel/artel/tasks.py
index 3a928a5..35b1ab0 100644
--- a/artel/artel/tasks.py
+++ b/artel/artel/tasks.py
@@ -15,17 +15,14 @@ THUMBNAIL_SIZES = {
 
 
 @shared_task
-def generate_thumbnails(image_url):
+def generate_thumbnails(image_path):
     try:
+        thumbnailer = get_thumbnailer(image_path)
         thumbnails = {}
-        thumbnailer = get_thumbnailer(image_url)
-
         for size_name, (width, height, crop) in THUMBNAIL_SIZES.items():
             thumbnail = thumbnailer.get_thumbnail({'size': (width, height), 'crop': crop})
-            thumbnail_url = thumbnail.url
-            thumbnails[size_name] = thumbnail_url
-
+            thumbnails[size_name] = thumbnail.url
         return thumbnails
     except Exception as e:
-        logger.exception(f"Error generating thumbnails for image_instance {image_url}: {e}")
+        logger.exception(f"Error generating thumbnails for image_instance {image_path}: {e}")
         return None
diff --git a/artel/docker-compose.yml b/artel/docker-compose.yml
index 1d9b7cd..c4ac620 100644
--- a/artel/docker-compose.yml
+++ b/artel/docker-compose.yml
@@ -75,6 +75,7 @@ services:
     command: celery -A artel worker -l info
     volumes:
       - ./:/app
+      - media:/app/media
     env_file:
       - .env
     environment:
diff --git a/artel/store/signals.py b/artel/store/signals.py
index b630588..2124bc6 100644
--- a/artel/store/signals.py
+++ b/artel/store/signals.py
@@ -5,6 +5,6 @@ from artel.tasks import generate_thumbnails
 
 
 @receiver(post_save, sender=ProductTemplateImage)
-def create_thumbnail_on_image_creation(sender, instance, created, **kwargs):
-    if created:
-        generate_thumbnails.delay(instance.image.url)
+def generate_thumbnail(sender, instance, **kwargs):
+    image_path = instance.image.path
+    generate_thumbnails.delay(image_path)