add link to issue

Signed-off-by: Meredith Lancaster <[email protected]>

pkg/webhook/bundle.go

@@ -29,6 +29,7 @@ type noncompliantRegistryTransport struct{}
 // an unexpected status code 406 when the go-containerregistry library used
 // by this code attempts to make a request to the referrers API.
 // The go-contqainerregistry library can handle 404 response but not a 406 response.
+// See the related go-containerregistry issue: https://github.com/google/go-containerregistry/issues/1962
 func (a *noncompliantRegistryTransport) RoundTrip(req *http.Request) (*http.Response, error) {
 	resp, err := http.DefaultTransport.RoundTrip(req)
 	if resp.StatusCode == http.StatusNotAcceptable && strings.Contains(req.URL.Path, "/referrers/") {