安装必要依赖：
sudo yum install -y curl policycoreutils-python openssh-server cronie
sudo lokkit -s http -s ssh
安装邮件发送依赖
sudo yum install postfix
sudo service postfix start
sudo chkconfig postfix on
将gitlab-ce加入下载仓库
curl https://packages.gitlab.com/install/repositories/gitlab/gitlab-ce/script.rpm.sh | sudo bash
安装gitlab-ce
URL请根据自身设置
sudo EXTERNAL_URL="http://gitlab.adebug.com" yum -y install gitlab-ce