ci: sigleRun for karma ci mode

Author: iChenLei

karma.conf.js

@@ -83,7 +83,7 @@ module.exports = function(config) {
 
     // Continuous Integration mode
     // if true, Karma captures browsers, runs the tests and exits
-    singleRun: false,
+    singleRun: true,
 
     // Concurrency level
     // how many browser should be started simultaneous