Nginx and github for website

I just setup 开发者_JAVA技巧an EC2 server with nginx/php/mysql/ruby-rails.

I was wondering if there was a way to use my github repo and clone it onto the web server every time I make a commit. some of the files are php and others are ruby.

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This is probably what you're looking for: http://help.github.com/post-receive-hooks/