说明
gitlab配置CI/CD流水线，基于gitlab版本15.11
先以最简单的配置运行起来，分解难度，跑通了再深入学习实践
安装启动runner
安装参考https://www.tang.show/docker/runner/
#直接在centos7系统安装，选shell类型，降低困难度
检查gitlab项目页面地址
对于自己部署的runner如果地址不是ip或域名，需要设置下否则cicd无法拉代码
    设置成ip参考https://www.tang.show/git-gitlab/docker%e5%ae%89%e8%a3%85gitlab/
    中的初始化配置>>设置url地址|设置gitlab克隆地址
    然后执行gitlab-ctl reconfigure 和gitlab-ctl restart #重载、重启

注册runner
可在gitlab页面http://192.168.2.32/admin/runners页面获取token信息或复制快捷命令
然后在安装runner的机器上执行：
    gitlab-runner register --url http://192.168.2.32/ --registration-token xxxzCZHvrsa Runtime platform arch=amd64 os=linux pid=38319 revision=436955cb version=15.11.0 xx
    Enter the GitLab instance URL (for example, https://gitlab.com/):#回车
    [http://192.168.2.32/]: 
    Enter the registration token:#回车
    [3HjVKq225ryLzCZHvrsa]: 
    Enter a description for the runner:
    [localhost]: 
    Enter tags for the runner (comma-separated):#回车，设置为默认，这样yaml文件不用指定就能调用该runner
    Enter optional maintenance note for the runner:
    WARNING: Support for registration tokens and runner parameters in the 'register' command has been deprecated in GitLab Runner 15.6 and will be replaced with xx
    Registering runner... succeeded                     runner=3HjVKq22
    Enter an executor: ssh, virtualbox, docker-autoscaler, custom, docker, docker-windows, docker-sshx xx -ssh+machine:#直接输入shell，再回车
    shell
    Runner registered successfully. Feel free to start it, but if it's running already the config should be automatically reloaded!
    #注册完成，gitlab页面查看，runner已上线
新建项目
创建一个项目，在根目录放置.gitlab-ci.yml，内容如下：
  pages:
  stage: deploy
  environment: production
  script:
    - echo "hello"
    - mkdir .public
    - cp -r ./* .public
    - rm -rf public
    - mv .public public
  artifacts:
    paths:
      - public
  rules:
    - if: $CI_COMMIT_BRANCH == $CI_DEFAULT_BRANCH
然后新一个任意文件，配置正确的会触发cicd流程按上配置执行
观察执行
如图，执行已完成：

登录runner执行 find / -name testabc，返回以下，代表已成功拉下项目，并且执行了yaml配置：
    /home/gitlab-runner/builds/2jw2Jm3g/0/gitlab-instance-f0987d43/r1/testabc
    /home/gitlab-runner/builds/2jw2Jm3g/0/gitlab-instance-f0987d43/r1/public/testabc、

在gitlab页面上也能查看执行的详情：