Fix containerd fails to pull OCI image with non-http(s):// urls

ktock · ktock · commit 526defb5715f · 2021-11-12T09:49:28.000+09:00
Signed-off-by: Kohei Tokunaga &lt;ktokunaga.mail@gmail.com&gt;
diff --git a/remotes/docker/fetcher.go b/remotes/docker/fetcher.go
@@ -59,6 +59,10 @@ func (r dockerFetcher) Fetch(ctx context.Context, desc ocispec.Descriptor) (io.R
 				log.G(ctx).WithError(err).Debug("failed to parse")
 				continue
 			}
+			if u.Scheme != "http" && u.Scheme != "https" {
+				log.G(ctx).Debug("non-http(s) alternative url is unsupported")
+				continue
+			}
 			log.G(ctx).Debug("trying alternative url")
 
 			// Try this first, parse it
