diff --git a/builder/exector/export_app.go b/builder/exector/export_app.go
index 0c9f78f51..287f6a573 100644
--- a/builder/exector/export_app.go
+++ b/builder/exector/export_app.go
@@ -252,16 +252,16 @@ func (i *ExportApp) parseApps() ([]gjson.Result, error) {
 	return arr, nil
 }
 
+//exportImage export image of app
 func (i *ExportApp) exportImage(serviceDir string, app gjson.Result) error {
 	serviceName := app.Get("service_cname").String()
 	serviceName = unicode2zh(serviceName)
 	os.MkdirAll(serviceDir, 0755)
-	// 处理掉文件名中冒号等不合法字符
 	image := app.Get("share_image").String()
 	tarFileName := buildToLinuxFileName(image)
 	user := app.Get("service_image.hub_user").String()
 	pass := app.Get("service_image.hub_password").String()
-	// 如果是runner镜像则跳过
+	// ignore runner image
 	if checkIsRunner(image) {
 		logrus.Debug("Skip the runner image: ", image)
 		return nil
@@ -296,14 +296,14 @@ func (i *ExportApp) exportSlug(serviceDir string, app gjson.Result) error {
 	_, err := os.Stat(shareSlugPath)
 	if shareSlugPath != "" && err == nil {
 		logrus.Debug("The slug file was exist already, direct copy to service dir: ", shareSlugPath)
-		err = exec.Command("cp", shareSlugPath, fmt.Sprintf("%s/%s", serviceDir, tarFileName)).Run()
+		err = util.CopyFile(shareSlugPath, fmt.Sprintf("%s/%s", serviceDir, tarFileName))
 		if err == nil {
 			return nil
 		}
-		// 如果copy失败则忽略，在下一步中下载该slug包
+		// if local copy failure, try download it
 		logrus.Debugf("Failed to copy the slug file to service dir %s: %v", shareSlugPath, err)
 	}
-	// 提取tfp服务器信息
+	// get slug save server (ftp) info
 	ftpHost := app.Get("service_slug.ftp_host").String()
 	ftpPort := app.Get("service_slug.ftp_port").String()
 	ftpUsername := app.Get("service_slug.ftp_username").String()
@@ -314,15 +314,14 @@ func (i *ExportApp) exportSlug(serviceDir string, app gjson.Result) error {
 		logrus.Error("Failed to create ftp client: ", err)
 		return err
 	}
-	// 开始下载文件
-	i.Logger.Info(fmt.Sprintf("获取应用源码：%s", serviceName), map[string]string{"step": "get-slug", "status": "failure"})
+	// download slug file
+	i.Logger.Info(fmt.Sprintf("Download service %s slug file", serviceName), map[string]string{"step": "get-slug", "status": "failure"})
 	err = ftpClient.DownloadFile(shareSlugPath, fmt.Sprintf("%s/%s", serviceDir, tarFileName), i.Logger)
 	ftpClient.Close()
 	if err != nil {
 		logrus.Errorf("Failed to download slug file for group %s: %v", i.SourceDir, err)
 		return err
 	}
-
 	logrus.Debug("Successful download slug file: ", shareSlugPath)
 	return nil
 }
diff --git a/builder/exector/import_app.go b/builder/exector/import_app.go
index 1880565ba..5a7c8d94c 100644
--- a/builder/exector/import_app.go
+++ b/builder/exector/import_app.go
@@ -498,13 +498,9 @@ func (i *ImportApp) loadApps() error {
 				}
 			} else {
 				os.MkdirAll(filepath.Base(shareSlugPath), 0755)
-				cmd := exec.Command("cp", fileName, shareSlugPath)
-				var out bytes.Buffer
-				cmd.Stdout = &out
-				cmd.Stderr = &out
-				err = cmd.Run()
+				err := util.CopyFile(fileName, shareSlugPath)
 				if err != nil {
-					logrus.Error("Failed to copy slug file to local directory: ", out.String())
+					logrus.Error("Failed to copy slug file to local directory: ", shareSlugPath)
 					return err
 				}
 			}
diff --git a/util/comman.go b/util/comman.go
index e5a62796a..f94eb2ba7 100644
--- a/util/comman.go
+++ b/util/comman.go
@@ -166,7 +166,7 @@ func CmdRunWithTimeout(cmd *exec.Cmd, timeout time.Duration) (bool, error) {
 		go func() {
 			<-done // allow goroutine to exit
 		}()
-		logrus.Info("process:%s killed", cmd.Path)
+		logrus.Infof("process:%s killed", cmd.Path)
 		return true, err
 	case err = <-done:
 		return false, err
@@ -564,6 +564,37 @@ func Unzip(archive, target string) error {
 	return nil
 }
 
+// CopyFile copy source file to target
+// direct io read and write file
+// Keep the permissions user and group
+func CopyFile(source, target string) error {
+	sfi, err := os.Stat(source)
+	if err != nil {
+		return err
+	}
+	elem := reflect.ValueOf(sfi.Sys()).Elem()
+	uid := elem.FieldByName("Uid").Uint()
+	gid := elem.FieldByName("Gid").Uint()
+	sf, err := directio.OpenFile(source, os.O_RDONLY, 0)
+	if err != nil {
+		return err
+	}
+	defer sf.Close()
+	tf, err := directio.OpenFile(target, os.O_RDONLY|os.O_CREATE|os.O_WRONLY, sfi.Mode())
+	if err != nil {
+		return err
+	}
+	defer tf.Close()
+	_, err = io.Copy(tf, sf)
+	if err != nil {
+		return err
+	}
+	if err := os.Chown(target, int(uid), int(gid)); err != nil {
+		return err
+	}
+	return nil
+}
+
 //GetParentDirectory GetParentDirectory
 func GetParentDirectory(dirctory string) string {
 	return substr(dirctory, 0, strings.LastIndex(dirctory, "/"))
diff --git a/util/comman_test.go b/util/comman_test.go
index de69adab7..255d857e2 100644
--- a/util/comman_test.go
+++ b/util/comman_test.go
@@ -99,3 +99,9 @@ func TestDiskUsage(t *testing.T) {
 func TestGetCurrentDir(t *testing.T) {
 	t.Log(GetCurrentDir())
 }
+
+func TestCopyFile(t *testing.T) {
+	if err := CopyFile("/tmp/test2.zip", "/tmp/test4.zip"); err != nil {
+		t.Fatal(err)
+	}
+}