Update docker-compose.yml

Update the version of image to v2.0-beta.2

docker-compose.yml

@@ -1,5 +1,5 @@
 MinDoc_New:
-  image: registry.cn-hangzhou.aliyuncs.com/mindoc/mindoc:v0.13
+  image: registry.cn-hangzhou.aliyuncs.com/mindoc/mindoc:v2.0-beta.2
   privileged: false
   restart: always
   ports:
@@ -20,4 +20,4 @@ MinDoc_New:
     - MINDOC_CDN_JS_URL=
   dns:
     - 223.5.5.5
-    - 223.6.6.6
+    - 223.6.6.6