Reset content pointer

imagekit/cachefiles/__init__.py

@@ -74,6 +74,9 @@ class ImageCacheFile(BaseIKFile, ImageFile):
 
         actual_name = self.storage.save(self.name, content)
 
+        # We're going to reuse the generated file, so we need to reset the pointer.
+        content.seek(0)
+
         # Store the generated file. If we don't do this, the next time the
         # "file" attribute is accessed, it will result in a call to the storage
         # backend (in ``BaseIKFile._get_file``). Since we already have the