gitlab之gitlab_server_hook:

https://github.com/gitlabhq/gitlabhq/blob/667c0a909bde1cf71f21d8ec9768e98b1c489030/doc/hooks/custom_hooks.md
https://git-scm.com/book/en/v2/Customizing-Git-Git-Hooks#Server-Side-Hooks
https://gitbook.curiouser.top/origin/gitlab-server-hook.html //文章
https://docs.gitlab.com/ee/administration/server_hooks.html //官网