diff --git a/main.go b/main.go
index b9da6b3..36f3ecc 100644
--- a/main.go
+++ b/main.go
@@ -33,18 +33,8 @@ var config Config
 
 var client = &http.Client{
 	CheckRedirect: func(req *http.Request, via []*http.Request) error {
-		for key, val := range via[0].Header {
-			if _, ok := req.Header[key]; !ok {
-				req.Header[key] = val
-			}
-		}
-
-		// S3 重定向时添加必要的头
-		if strings.Contains(req.URL.Host, "amazonaws.com") {
-			req.Header.Set("x-amz-content-sha256", "UNSIGNED-PAYLOAD")
-		}
-		
-		return nil
+		// 不跟随重定向，让 Docker 客户端自己处理
+		return http.ErrUseLastResponse
 	},
 	Timeout: 30 * time.Second,
 	Transport: &http.Transport{
@@ -516,9 +506,6 @@ func sendRequestWithContext(ctx context.Context, method, url string, headers htt
 
 	req.Header = headers
 	
-	// 为可能的 S3 重定向预先添加头
-	req.Header.Set("x-amz-content-sha256", "UNSIGNED-PAYLOAD")
-
 	startTime := time.Now()
 	resp, err := client.Do(req)