Jenkins自动构建docker镜像，并推送到阿里云

这篇主要介绍使用Jenkins自动从git仓库拉取代码并构建镜像，最后推送到阿里云

Jenkins安装请参考：https://www.cuiwei.net/p/1392307197

ssh连接gitee 请参考：https://www.cuiwei.net/p/1475072228

准备

配置证书

了解两个插件：docker-build-step 和 Version Number，其中Version Number不是必须的

Version Number

支持生成更复杂的版本信息。

在 “某任务” - “配置” - “构建环境” 找到 “Create a formatted version number”。这里配置增加变量BUILD_VERSION，格式为 ${BUILD_DATE_FORMATTED, "yyyy-MM-dd"}.${BUILD_NUMBER}。

构建镜像时使用这个变量BUILD_VERSION

看结果，默认的镜像名称是BUILD_NUMBER，现在已经变成${BUILD_DATE_FORMATTED, "yyyy-MM-dd"}.${BUILD_NUMBER}

docker-build-step

Set Docker URL In Jenkins global configuration, you need to specify Docker REST API URL.

Jenkins -> Manage Jenkins -> Configure System -> Docker Builder

Configure Docker server REST API URL
- For Linux nodes, set the local socket unix:///var/run/docker.sock
- For other nodes, you may need to set something like tcp://127.0.0.1:2375
Test the connection.

WX20221129-001444@2x.png

具体操作

拉取master的代码 -> Creat/build image -> Tag image -> Push image -> Remove image

日志

[Docker] INFO: Step 1/1 : FROM busybox:latest
[Docker] INFO: 

[Docker] INFO:  ---> 9d5226e6ce3f

[Docker] INFO: Successfully built 9d5226e6ce3f

[Docker] INFO: Successfully tagged 2022-12-01.28:latest

[Docker] INFO: Build image id:9d5226e6ce3f
[Docker] INFO: start tagging image 2022-12-01.28:latest in registry.cn-hangzhou.aliyuncs.com/cuiw/test as 28
[Docker] INFO: Tagged image 2022-12-01.28:latest in registry.cn-hangzhou.aliyuncs.com/cuiw/test as 28
[Docker] INFO: Pushing image registry.cn-hangzhou.aliyuncs.com/cuiw/test:28
[Docker] INFO: Done pushing image registry.cn-hangzhou.aliyuncs.com/cuiw/test:28
[Docker] INFO: Removed image 2022-12-01.28:latest
Finished: SUCCESS

常见问题

问题1

[Docker] ERROR: Failed to create docker image: connect(..) failed: Permission denied: /var/run/docker.sock

依次执行以下命令，然后重启就好了

gpasswd -a jenkins docker
newgrp docker

问题2

[Docker] ERROR: Failed to exec start:null
[Docker] ERROR: Failed to create docker image: null
ERROR: Build step failed with exception
java.util.NoSuchElementException
	at java.base/java.util.ArrayDeque.removeFirst(ArrayDeque.java:363)
...

这个问题很严重，折腾我好几天。有时行，有时不行（很多时候都不行），暂时无解！

参考

https://www.jianshu.com/p/5c3e6f2c5d15

https://blog.csdn.net/qq_39905409/article/details/122449380

https://plugins.jenkins.io/docker-build-step/

https://plugins.jenkins.io/versionnumber/