[improvement] ImagePreview: add show-index prop (#1889)

packages/card/index.vue

@@ -35,11 +35,16 @@
 </template>
 
 <script>
+import VanTag from '../tag';
 import create from '../utils/create';
 
 export default create({
   name: 'card',
 
+  components: {
+    VanTag
+  },
+
   props: {
     tag: String,
     desc: String,