https://zhuanlan.zhihu.com/p/69513606
https://www.jianshu.com/p/2f33ec8d7c62
https://www.howtoing.com/how-to-install-and-configure-gitlab-on-ubuntu-16-04/
https://mirror.tuna.tsinghua.edu.cn/help/gitlab-ce/
https://blog.csdn.net/hust_cxl/article/details/77332451
https://www.jianshu.com/p/4a5877d1e14b
https://www.redhat.com/zh/topics/devops/what-is-ci-cd
https://www.linuxidc.com/Linux/2018-01/150319.htm
https://www.cnblogs.com/dqcer/p/9596813.html
https://www.cnblogs.com/wangtao1993/p/6144183.html
https://jingyan.baidu.com/article/5552ef47fbb9b3518ffbc983.html
https://www.douban.com/note/573320056/
https://blog.csdn.net/lucy06/article/details/78899273
https://blog.csdn.net/allenwdj/article/details/50432459
https://blog.csdn.net/ouyang_peng/article/details/72903221（较详细）
https://about.gitlab.com/install/#ubuntu（官方网站，需要改变源不然报错）
https://blog.csdn.net/guitarbar/article/details/50342573（卸载）
https://blog.csdn.net/u013549582/article/details/82417919（卸载）
