Use Bitbucket (server edition) to update web site in vitualmin managed server

[dinis brazão]

Hi all.

I have 

• website in an virtualmin server;
• Bitbucket running in another server

I need to be able to

• change files locally (eg, my and my colleagues computer),push new code into my bitbucket server (normal stuff using source tree);
• the bitbuckt server "pings" the virtualmin server so that, automatically, the the server pulls the new version 

Later on, I'll look into versions / branches. for now I would just like to have some light on how to do this.

Anyone can point me where to find info on how to accomplish this?

Thanks in advance,

Dinis