Setup Remote GIT Repository Server on CentOS 7

https://adhoctuts.com/setup-remote-git-repository-server-on-centos-7/
https://docs.google.com/document/d/1XXi0-7dx4p33yJDFZIAjOJrMJ9W5DBdj75ovXhMpfjE/edit
This is the ad hoc tutorial on how to setup remote GIT repository server on CentOS 7.