前面Jenkins 说到使用【Kubernetes】该插件（Configure Clouds），作为node 节点，那就需要在构建容器里面配置常用的构建环境

制作基础构建镜像

    docker_images: jenkins/agent:jdk8
    gradle: v6.9.0
    node: v12.18.3
    sdkmanager: 4.0

生成镜像Dockerfile

Nexus3 私服配置

npm ，gradle , mvn 配置镜像加速地址，或者私服

maven 配置私服仓库，配置settings.xml

工具包不要通过ADD添加进去，由于镜像的分层会使得镜像很大，通过curl减少镜像的体积

ARG version=jdk8
FROM jenkins/agent:$version
ARG version
LABEL Description="This is a base image by yangfk ,blog: yfklife.cn"
ARG user=jenkins

USER root
COPY jenkins-agent /usr/local/bin/jenkins-agent

#省略配置环境。。。。。。

RUN mkdir /application \
    && curl -o /application/apache-maven-3.6.3-bin.tar.gz  http://192.168.14.10/buildtools/apache-maven-3.6.3-bin.tar.gz \
    && curl -o /application/node-v12.18.3-linux-x64.tar.gz http://192.168.14.10/buildtools/node-v12.18.3-linux-x64.tar.gz \
    && curl -o /application/cmdline-tools.tar.gz http://192.168.14.10/buildtools/cmdline-tools.tar.gz \
    && curl -o /application/gradle-6.8.tar.gz http://192.168.14.10/buildtools/gradle-6.8.tar.gz \
    && tar xf /application/apache-maven-3.6.3-bin.tar.gz -C /application \
    && tar xf /application/node-v12.18.3-linux-x64.tar.gz -C /application  \
    && tar xf /application/cmdline-tools.tar.gz -C /application  \
    && tar xf /application/gradle-6.8.tar.gz -C /application  \
    && rm -f /application/*.tar.gz \
    && chown jenkins:jenkins -R /application \
    && chmod +x /usr/local/bin/jenkins-agent && chmod +x /usr/local/bin/* \
    && ln -s /usr/local/bin/jenkins-agent /usr/local/bin/jenkins-slave \
    && ln -s /application/gradle-6.8/bin/gradle /usr/local/bin/gradle \
    && ln -s /application/cmdline-tools/latest/bin/* /usr/local/bin/ \
    && ln -s /application/cmdline-tools/latest/licenses /application/ 

#省略配置环境。。。。。。

USER ${user}
ENTRYPOINT ["jenkins-agent"]

工具下载地址

• maven-3

maven-3_Release (opens new window) / apache-maven-3.6.3-bin.tar.gz (opens new window)

• gradle

gradle_Releases (opens new window) / gradle-v6.9.0.tar.gz (opens new window)

• sdkmanager/commandlinetools-linux-7302050_latest

sdkmanager-4.0 (opens new window)

• node

node_Release (opens new window) / node-v12.18.3-linux-x64.tar.gz (opens new window)

cmdline-tools目录制作(sdkmanager)

1，使用Dockerfile，先起一个基础容器，然后在这基础上配置Gradle环境*

2，把压缩包上传到容器"commandlinetools-linux-7302050_latest.zip",解压并重命名（在cmdline-tools下创建latest目录，把当前目录下的文件放入到latest）

4，生成licenses：

cd /application/cmdline-tools/latest/bin/
./sdkmanager --licenses   #一路按 y
cd /application
ln -s /application/licenses  /application/cmdline-tools/latest/licenses

5，上传gradle-v6.9.0.tar.gz工具包，解压到/application下，并把bin目录软链接到 /usr/local/bin下(使用root用户登录)

6，拉取android代码，执行打包,第一次会打包失败

echo 'sdk.dir=/application/cmdline-tools/latest' > local.properties

打包命令（等待一段时间，下载构建包）：gradle assembleRelease

报错信息：

	* What went wrong:
	Could not determine the dependencies of task ':app:compileReleaseJavaWithJavac'.
	> Failed to find target with hash string 'android-29' in: /application/cmdline-tools/latest

第一次打包生成的目录如下显示

	jenkins@b74b64403148:~$ ls -l /application/cmdline-tools/latest/
	total 84
	drwxr-xr-x  2 jenkins jenkins   107 Mar 17 02:23 bin
	drwxr-xr-x  3 jenkins jenkins    20 Mar 17 02:56 build-tools
	drwxr-xr-x  7 jenkins jenkins  4096 Mar 17 02:55 emulator
	drwxr-xr-x 16 jenkins jenkins  4096 Mar 17 02:23 lib
	drwxr-xr-x  2 jenkins jenkins   198 Mar 17 02:43 licenses
	-rwxr-xr-x  1 jenkins jenkins 70001 Dec 31  2009 NOTICE.txt
	drwxr-xr-x  3 jenkins jenkins    16 Mar 17 02:55 patcher
	drwxr-xr-x  3 jenkins jenkins    24 Mar 17 02:56 platforms
	drwxr-xr-x  4 jenkins jenkins   303 Mar 17 02:55 platform-tools
	-rwxr-xr-x  1 jenkins jenkins    84 Dec 31  2009 source.properties
	drwxr-xr-x  6 jenkins jenkins   205 Mar 17 02:56 tools

7，把【build-tools/ platform-tools/ licenses platforms licenses/ bin/ lib/ source.properties】 这几个目录,文件拷贝到宿主机

制作压缩包：cmdline-tools.tar.gz

最终的目录显示

	jenkins@e7b952031189:~$ ls -l /application/cmdline-tools/latest/
	total 80
	drwxr-xr-x  2 jenkins jenkins   107 Jul 19  2021 bin
	drwxr-xr-x  3 jenkins jenkins    20 Mar 16 05:12 build-tools
	drwxr-xr-x 16 jenkins jenkins  4096 Jul 19  2021 lib
	drwxr-xr-x  2 jenkins jenkins   198 Jul 19  2021 licenses
	-rwxr-xr-x  1 jenkins jenkins 70001 Dec 31  2009 NOTICE.txt
	drwxr-xr-x  3 jenkins jenkins    24 Aug 23  2021 platforms
	drwxr-xr-x  4 jenkins jenkins   303 Mar 16 05:10 platform-tools
	-rwxr-xr-x  1 jenkins jenkins    84 Dec 31  2009 source.properties

8,把下载的几个包，都改成tar包，通过nginx代理，构建镜像，通过curl减少体积