Git Post-Push hook替换build文件夹

I'm working with an AngularJS app that I am hosting on Azure as a Web App.

My repository is on Bitbucket, connected as a deployment slot. I use TortoiseGit as a Windows shell for commit/pull/push. Grunt is my task runner.

Problem: I am not managing to replace the build folder after a push has been made. This is what is being exposed on Azure (see picture):

What I've tried:

• Batch file using Windows ftp.exe replacing the folder after push using mput
• Following this guide by taking advantages of Azure's engine for git deployment(s) that is behind every web app.
• WebHook on Bitbucket calling URL with simple PHP script doing a FTP upload

Currently my solution is that after a push I'm building using grunt build and connecting through FTP with FileZilla and replacing build folder manually.

How can I automate this?

Thanks in advance.

I solved this by refactor my initial batch script that calls:

npm install 
bower install 
grunt clean 
grunt build
winscp.com /script=azureBuildScript.txt

and my azureBuildScript.txt:

option batch abort
option confirm off
open ftps://xxx\xxx:xxx@waws-prod-db3-023.ftp.azurewebsites.windows.net/
cd site/wwwroot
rmdir %existingFolder%
put %myFolder%
exit

This is being triggered Post-Push as a Hook job in TortoiseGit.

It turns out ftp.exe is restricted regarding passive mode and can't interpret a session whilst WinSCP does this with ease.