podman rmi: improve error message for build containers

Improve the error message when attempting to remove an image that is in
use by an external/build container.  Prior, the error only indicated
that the image was in use but did not aid in resolving the issue.

Fixes: #15006
Signed-off-by: Valentin Rothberg <vrothberg@redhat.com>

vendor/github.com/containers/common/libimage/image.go

@@ -470,6 +470,9 @@ func (i *Image) removeRecursive(ctx context.Context, rmMap map[string]*RemoveIma
 	}
 
 	if _, err := i.runtime.store.DeleteImage(i.ID(), true); handleError(err) != nil {
+		if errors.Is(err, storage.ErrImageUsedByContainer) {
+			err = fmt.Errorf("%w: consider listing external containers and force-removing image", err)
+		}
 		return processedIDs, err
 	}
 	report.Untagged = append(report.Untagged, i.Names()...)
@@ -478,6 +481,11 @@ func (i *Image) removeRecursive(ctx context.Context, rmMap map[string]*RemoveIma
 		report.Removed = true
 	}
 
+	// Do not delete any parents if NoPrune is true
+	if options.NoPrune {
+		return processedIDs, nil
+	}
+
 	// Check if can remove the parent image.
 	if parent == nil {
 		return processedIDs, nil
@@ -495,7 +503,6 @@ func (i *Image) removeRecursive(ctx context.Context, rmMap map[string]*RemoveIma
 	if !danglingParent {
 		return processedIDs, nil
 	}
-
 	// Recurse into removing the parent.
 	return parent.removeRecursive(ctx, rmMap, processedIDs, "", options)
 }