test: 使用ContainmentItem并添加dockOrder属性

package/driverview.qml

@@ -2,25 +2,26 @@
 //
 // SPDX-License-Identifier: LGPL-3.0-or-later
 
-import QtQuick 2.11
-import QtQuick.Controls 2.4
+import QtQuick 2.15
+import QtQuick.Controls 2.15
 import org.deepin.ds 1.0
 
-AppletItem {
+ContainmentItem {
     id: root
     objectName: "graphics driver applet"
-    implicitWidth: 100
-    implicitHeight: 32
+    implicitWidth: 56
+    implicitHeight: 56
+    property int dockOrder: 20
 
     Rectangle {
         anchors.fill: parent
         color: "#3498db"
-        radius: 4
+        radius: 8
 
         Text {
             anchors.centerIn: parent
             text: "GPU"
-            font.pixelSize: 12
+            font.pixelSize: 14
             color: "white"
         }
     }