Merge pull request #735 from Junnplus/login-404

fix ghcr login 404 again

Author: AkihiroSuda

cmd/nerdctl/login.go

@@ -256,17 +256,17 @@ func tryLoginWithRegHost(ctx context.Context, rh docker.RegistryHost) error {
 	if rh.Authorizer == nil {
 		return errors.New("got nil Authorizer")
 	}
-	u := url.URL{
-		Scheme: rh.Scheme,
-		Host:   rh.Host,
-		Path:   rh.Path,
-	}
 	if rh.Path == "/v2" {
 		// If the path is using /v2 endpoint but lacks trailing slash add it
 		// https://docs.docker.com/registry/spec/api/#detail. Acts as a workaround
 		// for containerd issue https://github.com/containerd/containerd/blob/2986d5b077feb8252d5d2060277a9c98ff8e009b/remotes/docker/config/hosts.go#L110
 		rh.Path = "/v2/"
 	}
+	u := url.URL{
+		Scheme: rh.Scheme,
+		Host:   rh.Host,
+		Path:   rh.Path,
+	}
 	ctx = docker.WithScope(ctx, "")
 	var ress []*http.Response
 	for i := 0; i < 10; i++ {