1.安裝gitlab-runner

# Linux x86-64
sudo wget -O /usr/local/bin/gitlab-runner https://gitlab-runner-downloads.s3.amazonaws.com/latest/binaries/gitlab-runner-linux-amd64

sudo chmod +x /usr/local/bin/gitlab-runner

sudo useradd --comment 'GitLab Runner' --create-home gitlab-runner --shell /bin/bash

sudo gitlab-runner install --user=gitlab-runner --working-directory=/home/gitlab-runner
sudo gitlab-runner start
 

以上是Linux64位環境下的安裝，其他的環境參考 https://docs.gitlab.com/runner/install/linux-manually.html

2.註冊gitlab-runner

sudo gitlab-runner register

他會提示你寫gitlab的地址和token，這地址可以在gitlab的網頁上的settings->CI/CD Pipelines 找到如圖：

另外，配置好的runner可能需要開啟-Run untagged jobs，同樣在上圖所示的頁面中有一個Runners activated for this project列表，點選下面runner右側的修改按鈕，在頁面中把 Run untagged jobs勾選即可

其他具體參考：https://docs.gitlab.com/runner/register/index.html

3.在專案根目錄中新增 .gitlab-ci.yml 如下：

# 提交dev分支時觸發
dev job:
  only:
    - dev
  script: 
    - echo 'dev' >> ci.log

# 提交test分支時觸發
test job:
  only:
    - test
  script: 
    - ssh [email protected] -i /home/gitlab-runner/.ssh/ci_key << ssh2
    - date >> ci.log
    - cd /home/ubuntu/first_project/
    - git checkout test
    - git pull origin test
    - ssh2

# 提交master分支時觸發
master job:
  only:
    - master
  script: 
    - ssh 
 
[email protected] -i /home/gitlab-runner/.ssh/ci_key << ssh2
    - date >> ci.log
    - cd /home/ubuntu/first_project/
    - git checkout master
    - git pull origin master
    - ssh2
    

然後，本地提交程式碼後runner就會執行.yml裡相關指令碼

全文參考：https://docs.gitlab.com/ee/ci/quick_start/README.html

yml教程：https://docs.gitlab.com/ee/ci/yaml/README.html