Add docs for registry tag details page and sorting

doc/user/packages/container_registry/index.md

@@ -35,6 +35,21 @@ Only members of the project or group can access a private project's Container Re
 
 If a project is public, so is the Container Registry.
 
+### View the tags of a specific image
+
+You can view a list of tags associated with a given container image:
+
+1. Go to your project or group.
+1. Go to **Packages & Registries > Container Registry**.
+1. Select the container image you are interested in.
+
+This brings up the Container Registry **Tag Details** page. You can view details about each tag,
+such as when it was published, how much storage it consumes, and the manifest and configuration
+digests.
+
+You can search, sort (by tag name), filter, and [delete](#delete-images-from-within-gitlab)
+tags on this page. You can share a filtered view by copying the URL from your browser.
+
 ## Use images from the Container Registry
 
 To download and run a container image hosted in the GitLab Container Registry: