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技术探究/docker容器/节点容器化自动构建流程.md
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技术探究/docker容器/节点容器化自动构建流程.md
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## 节点容器化自动构建流程
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#### 设置GitLab服务器钩子
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运用GitLab的webhook,勾选push Event,当每次有push操作的时候,会触发webhook向Jenkins发送事件。
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#### Jenkins配置主要步骤
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##### 新建Job项目
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新建项目,并添加项目描述。
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##### Git项目源配置
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##### Maven构建配置
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##### 清理镜像构建服务器的Jar包并重新上传
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* 采用远程执行脚本清理镜像构建服务器的旧Jar包
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* 复制新构建成功的Jar至镜像构建服务器上
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##### 清理旧的容器实例
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```
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container=`docker container ls -a | grep $container_name | awk '{print $1}'`
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echo 'stop container ' $container
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[[ -n $container ]] && docker stop $container
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echo 'rm container ' $container
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[[ -n $container ]] && docker rm $container
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```
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##### 清理旧的镜像实例
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```
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image=`docker images | grep $image_name | awk '{print $3}'`
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echo 'rm image ' $image
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[[ -n $image ]] && docker rmi $image
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```
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##### 构建镜像文件
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dockerfile如下:
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```
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# 基础镜像
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FROM openjdk:8-jre
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# author
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MAINTAINER ruoyi
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# 挂载目录
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VOLUME /home/ruoyi
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# 创建目录
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RUN mkdir -p /home/ruoyi
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# 指定路径
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WORKDIR /home/ruoyi
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# 复制jar文件到路径
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COPY ./jar/ruoyi-modules-system.jar /home/ruoyi/ruoyi-modules-system.jar
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# 启动系统服务
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ENTRYPOINT ["java","-jar","ruoyi-modules-system.jar"]
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```
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构建镜像:
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```
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docker build -t ruoyi-modules-system:0.0.1 .
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```
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##### 运行容器实例
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```
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new_image=`docker images |grep $image_name |awk '{print $3}'`
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[[ -n $new_image ]] && docker run -d -p 19201:9201 --name $container_name $new_image
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```
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