Symfony 2.1, make test enviroment from production project with capyfony or similar

Hello, We have a symfony project online, and a testing box with the same project, but the project on testing box is outdated now. We want to setup a new test box, and migrate the project from online to the new box. Also we need the documentation step by step on how to do this migration from one project in one box to another box. We tried to do using capifony, but after copy the files, configs, vendors, etc.. dont know how to start the project on the new machine. Yo can choose an other method, but we want to implement version control, and the posibility to easy rollback of changes commited to online project.