RUN mkdir -p /home/jenkins 是什么意思

这个命令会在Docker容器中创建一个目录，-p选项会自动创建所需的任何父目录。例如，如果/home/jenkins目录不存在，那么该命令将创建它，如果/home目录也不存在，则会创建/home和/home/jenkins目录。

所以，这个命令的作用是确保/home/jenkins目录存在，并且如果不存在，就创建它。这通常用于在Docker容器中安装软件包或应用程序时，需要将其下载或解压缩到指定的目录中。

相关问题

<builders> <org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder plugin="conditional-buildstep@1.4.2"> <condition class="org.jenkins_ci.plugins.run_condition.contributed.ShellCondition" plugin="run-condition@1.5"> <command>if git show --summary HEAD | grep -q -E "\(cherry picked from commit \b[0-9a-f]{5,40}\b\)"; then exit 1 fi</command> </condition> <buildStep class="hudson.tasks.Shell"> <command>./scripts/checkpatch.pl --min-conf-desc-length=1 --ignore GERRIT_CHANGE_ID -g HEAD </command> <configuredLocalRules/> </buildStep> <runner class="org.jenkins_ci.plugins.run_condition.BuildStepRunner$Run" plugin="run-condition@1.5"/> </org.jenkinsci.plugins.conditionalbuildstep.singlestep.SingleConditionalBuilder> <hudson.tasks.Shell> <command>NCPU=$(expr $(nproc --all ) / 2) make O=build-${BUILD_ID} -s defconfig make O=build-${BUILD_ID} -j$NCPU -s Image make O=build-${BUILD_ID} -j$NCPU -s modules make O=build-${BUILD_ID} INSTALL_MOD_PATH=../install-${BUILD_ID} -s modules_install mkdir -p install-${BUILD_ID}/boot/ KERNELVER=$(cat build-${BUILD_ID}/include/config/kernel.release 2> /dev/null) cat build-${BUILD_ID}/arch/arm64/boot/Image > install-${BUILD_ID}/boot/Image-$KERNELVER cp build-${BUILD_ID}/System.map install-${BUILD_ID}/boot/System.map-$KERNELVER cp build-${BUILD_ID}/.config install-${BUILD_ID}/boot/config-$KERNELVER tar -cJf install-${BUILD_ID}/linux-$KERNELVER.tar.xz -C install-${BUILD_ID}/ boot lib</command> <configuredLocalRules/> </hudson.tasks.Shell> <hudson.tasks.Shell> <command>cd $HOME/src/linux git fetch -p -t git pull </command> <configuredLocalRules/> </hudson.tasks.Shell> </builders> 这是一段Jenkins job的定义，请把它转成对应的JJB的yaml格式配置文件

对应的JJB的yaml格式配置文件如下所示：

- builders:
  - conditional-step:
      conditional-buildstep@1.4.2:
        condition:
          shell-condition:
            run-condition@1.5:
              command: "if git show --summary HEAD | grep -q -E \"\\(cherry picked from commit \\b[0-9a-f]{5,40}\\b\\)\"; then exit 1 fi"
        buildStep:
          shell:
            command: "./scripts/checkpatch.pl --min-conf-desc-length=1 --ignore GERRIT_CHANGE_ID -g HEAD"
            configuredLocalRules: ""
        runner:
          run-build-step-runner:
            run-condition@1.5: ""
  - shell:
      command: "NCPU=$(expr $(nproc --all ) / 2) make O=build-${BUILD_ID} -s defconfig make O=build-${BUILD_ID} -j$NCPU -s Image make O=build-${BUILD_ID} -j$NCPU -s modules make O=build-${BUILD_ID} INSTALL_MOD_PATH=../install-${BUILD_ID} -s modules_install mkdir -p install-${BUILD_ID}/boot/ KERNELVER=$(cat build-${BUILD_ID}/include/config/kernel.release 2> /dev/null) cat build-${BUILD_ID}/arch/arm64/boot/Image > install-${BUILD_ID}/boot/Image-$KERNELVER cp build-${BUILD_ID}/System.map install-${BUILD_ID}/boot/System.map-$KERNELVER cp build-${BUILD_ID}/.config install-${BUILD_ID}/boot/config-$KERNELVER tar -cJf install-${BUILD_ID}/linux-$KERNELVER.tar.xz -C install-${BUILD_ID}/ boot lib"
      configuredLocalRules: ""
  - shell:
      command: "cd $HOME/src/linux git fetch -p -t git pull"
      configuredLocalRules: ""

docker 部署jenkins

要使用Docker部署Jenkins，你可以按照以下步骤进行操作：

1. 创建一个挂载文件夹，并设置文件权限：

mkdir -p /home/jenkins_home
chmod 777 /home/jenkins_home

2. 下载Jenkins镜像：

docker pull jenkins/jenkins

3. 运行Jenkins容器：

docker run -d -uroot -p 9095:8080 -p 50000:50000 --name jenkins -v /home/jenkins_home:/var/jenkins_home -v /etc/localtime:/etc/localtime jenkins/jenkins

在这个命令中，我们使用了root身份进入容器，并将容器的8080端口映射到宿主机的9095端口，50000端口映射到宿主机的50000端口。同时，我们将宿主机上的`/home/jenkins_home`目录挂载到容器的`/var/jenkins_home`目录，以便保留Jenkins的工作目录和数据。还将宿主机的时间设置与容器的时间保持一致。

4. 查看Jenkins容器日志：

docker logs jenkins

请注意，以上步骤是使用Jenkins官方提供的镜像进行部署。如果你选择了不同的镜像，步骤可能会有所不同。