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@@ -903,6 +903,10 @@ You can also [run cleanup on a schedule](../../user/packages/container_registry/
## Container Registry garbage collection
+NOTE:
+Retention policies within your object storage provider, such as Amazon S3 Lifecycle, may prevent
+objects from being properly deleted.
+
Container Registry can use considerable amounts of disk space. To clear up
some unused layers, the registry includes a garbage collect command.