fix file permissions after sudo cp -a

pkg/minikube/command/exec_runner.go

@@ -116,7 +116,7 @@ func (e *execRunner) Copy(f assets.CopyableFile) error {
 
 	switch runtime.GOOS {
 	case "linux":
-		// write to TMP location ...
+		// write to temp location ...
 		tmpfile, err := ioutil.TempFile("", "minikube")
 		if err != nil {
 			return errors.Wrapf(err, "error creating tempfile")
@@ -126,9 +126,15 @@ func (e *execRunner) Copy(f assets.CopyableFile) error {
 		if err != nil {
 			return errors.Wrapf(err, "error writing to tempfile %s", tmpfile.Name())
 		}
-		// ... then use SUDO to move to target
-		// then sudo cp -a src dst
+
+		// ... then use sudo to move to target ...
 		_, err = e.RunCmd(exec.Command("sudo", "cp", "-a", tmpfile.Name(), dst))
+		if err != nil {
+			return errors.Wrapf(err, "error copying tempfile %s to dst %s", tmpfile.Name(), dst)
+		}
+
+		// ... then fix file permission that should have been fine because of "cp -a"
+		err = os.Chmod(dst, os.FileMode(perms))
 		return err
 
 	default: