Deploying not updating correctly


Hi, I am new here, and I need to deploy my updated code on local to test on domain. The app works fine now on localhost:3000, but when I deploy it to , it is like the old code (it is an app from angular-meteor page tutorial) is persisting on the server. I’ve tried to delete with deploy --delete command , and deploying again. But this still not working like expected. I 've got the same issue on local before, but was a misspelling, and I fixed it, and want to see it working online. Any advice ?
PS: I don’t know how to “rebuild” the app before deploying, if this is the problem.