ensure image is not removed before the container -> leads to problems

ipynbsrv/core/signals/container_images.py

@@ -22,20 +22,6 @@ def create_image_on_server(sender, container, image, **kwargs):
             raise ex
 
 
-@receiver(container_deleted)
-def delete_internal_image_if_latest(sender, container, **kwargs):
-    """
-    Delete the internal only image if this is the last container using it.
-    """
-    if container is not None:
-        try:
-            if container.is_image_based() and container.image.is_internal and not container.has_clones():
-                if not Container.objects.filter(image=container.image).exists():
-                    container.image.delete()
-        except ContainerImage.DoesNotExist:
-            pass
-
-
 @receiver(container_image_deleted)
 def delete_related_notifications(sender, image, **kwargs):
     """

ipynbsrv/core/signals/containers.py

@@ -146,6 +146,10 @@ def delete_on_server(sender, container, **kwargs):
     if container is not None:
         try:
             container.server.get_container_backend().delete_container(container.backend_pk)
+            # cleanup internal images
+            if container.is_image_based() and container.image.is_internal and not container.has_clones():
+                if not Container.objects.filter(image=container.image).exists():
+                    container.image.delete()
         except ContainerNotFoundError as ex:
             pass  # already deleted
         except ContainerBackendError as ex: