Better rate-limit support

Signed-off-by: Jiri Vrba <jiri.vrba@firma.seznam.cz>

src/pkg/reg/adapter/dockerhub/adapter.go

@@ -128,11 +128,10 @@ func getAdapterInfo() *model.AdapterPattern {
 
 // Rate-limit aware wrapper function for client.Do()
 // - Avoids being hit by limit by pausing requests when less than 8 requests remaining.
-// - Pauses when limit is hit.
+// - Pauses for given time when limit is hit.
 // - Allows 2 more attempts before giving up.
-// Reason: Observed (02/2024) penalty for hitting the limit is 120s, normal reset is max. 60s,
-//
-//	so it is better to not hit the wall.
+// Reason: Observed (02/2024) penalty for hitting the limit is 120s, normal reset is 60s,
+//         so it is better to not hit the wall.
 func (a *adapter) limit_aware_http_do(method string, path string, body io.Reader) (*http.Response, error) {
 	var attempts_left int = 3
 	for attempts_left > 0 {
@@ -153,7 +152,6 @@ func (a *adapter) limit_aware_http_do(method string, path string, body io.Reader
 			if err != nil {
 				return resp, err
 			}
-
 			if remaining_req < 8 {
 				reset_at, err := strconv.ParseInt(resp.Header.Get("x-ratelimit-reset"), 10, 64)
 				if err != nil {