From 52db772788e2857d3694a89c1cac8375fcf0a76a Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Miloslav=20Trma=C4=8D?= <mitr@redhat.com>
Date: Thu, 13 Oct 2022 20:47:34 +0200
Subject: [PATCH] Make the pseudo-config used in sigstore attachments a bit
 more valid
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... to placate quay.io's validation.

Signed-off-by: Miloslav Trmač <mitr@redhat.com>
---
 docker/docker_image_dest.go | 1 +
 1 file changed, 1 insertion(+)

diff --git a/docker/docker_image_dest.go b/docker/docker_image_dest.go
index 80a8efbb02..7b44782148 100644
--- a/docker/docker_image_dest.go
+++ b/docker/docker_image_dest.go
@@ -648,6 +648,7 @@ func (d *dockerImageDestination) putSignaturesToSigstoreAttachments(ctx context.
 			Digest:    "", // We will fill this in later.
 			Size:      0,
 		}, nil)
+		ociConfig.RootFS.Type = "layers"
 	} else {
 		logrus.Debugf("Fetching sigstore attachment config %s", ociManifest.Config.Digest.String())
 		// We don’t benefit from a real BlobInfoCache here because we never try to reuse/mount configs.