Merge branch 'release/5.5.1' into gray

@@ -21,6 +21,7 @@ const compression = require('compression');
 const bodyParser = require('body-parser');
 const cookieParser = require('cookie-parser');
 const uuid = require('uuid');
+const moment = require('moment');
 
 const pkg = require('./package.json');
 const cookieSession = require('client-sessions');
@@ -34,7 +35,7 @@ const app = express();
 // 向模板注入变量
 app.locals.devEnv = app.get('env') === 'development';
 app.locals.version = pkg.version;
-app.locals.startTime = Date.now();
+app.locals.startTime = moment().format('YYYYMMDDHH');
 
 // 全局注册library
 yohoLib.global(config);