How can I install ssh2 in Windows_NT (Azure web service) to connect VM from web service?

To make my question more clear, I'm breaking them into parts.

1. I have created webpage in Microsoft azure using app service {http:/####.azurewebsites.net}

2. I have created virtual machine linux (Ubuntu) platform

3. Both the service (web and vm) are in the same account (####@outlook.com).

Now, I want to connect web service with vm. I have seen solutions connecting using ssh2 in php codes as shown https://stackoverflow.com/questions/18799799/ssh-connection-to-a-remote-server-using-php.

I tried this in my local system (ubuntu). It was working fine. Now I want to connect to vm from web service. For this purpose how can I install ssh2 in webservice provided by azure. I have logged into azure web service via ftp using terminal. 

It shows remote system is Windows_NT.

How can I install ssh2 into webservice so that I can access vm from webservice.

Any help appreciated. Thank You