fix & opt

- fix docker not found regexp
- use en_US in docker cmd
-

lib/data/res/url.dart

@@ -3,3 +3,4 @@ const baseUrl = backendUrl + '/toolbox';
 const joinQQGroupUrl = 'https://jq.qq.com/?_wv=1027&k=G0hUmPAq';
 const myGithub = 'https://github.com/LollipopKit';
 const rainSunMeGithub = 'https://github.com/RainSunMe';
+const issueUrl = 'https://github.com/LollipopKit/flutter_server_box/issues';