add rpyc class and update Dockerfile

OpenshotService/openshot_video_generator.py

@@ -406,6 +406,8 @@ def anchor_video_v2(name_hash,name,text_content, image_urls,avatar,client_id):
 class video_service(rpyc.Service):
     def call_video(name_hash,name,text_content, image_urls,avatar,client_id):
         anchor_video_v2(name_hash,name,text_content, image_urls,avatar,client_id)
+    def call():
+        print('go')