Fix media file storage path and permissions

- Fix MEDIA_ROOT path to match Docker volume mount (/app/myproject/media)
- Update docker-compose.yml volume mounts to match MEDIA_ROOT
- Add setup_directories() function in entrypoint.sh to create media directories with proper permissions
- Add logging to TenantAwareFileSystemStorage for debugging
- Fix is_returned flag logic improvements (from previous work)

myproject/myproject/settings.py

@@ -246,7 +246,15 @@ else:
 # ============================================
 
 MEDIA_URL = '/media/'
-MEDIA_ROOT = BASE_DIR / 'media'
+# MEDIA_ROOT должен соответствовать монтированию volume в docker-compose.yml
+# На проде в Docker: /app/myproject/media (BASE_DIR = /app)
+# Локально: BASE_DIR / 'media' (BASE_DIR = путь к проекту)
+if os.environ.get('MEDIA_ROOT'):
+    MEDIA_ROOT = Path(os.environ.get('MEDIA_ROOT'))
+elif str(BASE_DIR) == '/app':  # В Docker контейнере
+    MEDIA_ROOT = BASE_DIR / 'myproject' / 'media'
+else:  # Локальная разработка
+    MEDIA_ROOT = BASE_DIR / 'media'
 
 # Custom file storage for tenant-aware file organization
 DEFAULT_FILE_STORAGE = 'products.utils.storage.TenantAwareFileSystemStorage'