1. #添加官方软件仓库的秘钥到本地的apt秘钥中
    2. $ wget -q -O - https://pkg.jenkins.io/debian-stable/jenkins.io.key | sudo apt-key add -
    3. #将地址添加进本地的软件源列表
    4. $ sudo vim /etc/apt/sources.list.d/jenkins.list
    5. #添加内容: deb https://pkg.jenkins.io/debian-stable binary/
    6. $ sudo apt-get update
    7. $ sudo apt-get install jenkins
    8. #指定端口
    9. sudo vim /etc/default/jenkins
    10. # 修改内容:HTTP_PORT=8081