基于git+jenkins+docker，运行本地hello工程

1. 硬件设备
   win10系统笔记本
2. 环境
   安装git，下载tomcat8.5，jenkins.war，安装oracle virsual vm， vm下安装centos7.5系 统，虚拟机环境下需要安装docker，配置网卡等
   虚拟机需要新增网卡2，配置如下：
   
   目的是可以通过ip地址访问，也可以通过配置网卡1端口映射访问，如下：
   
3. 将jenkins.war放到tomcat/webapps下并启动运行，浏览器访问：http://localhost:8183/jenkins，8183为已修改端口号。
4. 配置jenkins，安装git，ssh，maven插件并配置等
   系统配置：
   

工具配置：

5. 新建工程，并配置
本地编写hello工程

idea新建springboot web工程，pom配置

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>com.example</groupId>
    <artifactId>testgitjenkinsdocker</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>war</packaging>

    <name>testgitjenkinsdocker</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.1.0.RELEASE</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <exclusions>
                <exclusion>
                    <groupId>org.springframework.boot</groupId>
                    <artifactId>spring-boot-starter-tomcat</artifactId>
                </exclusion>
            </exclusions>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-tomcat</artifactId>
            <scope>provided</scope>
        </dependency>

    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <!--<configuration>
                    <mainClass>com.example.testgitjenkinsdocker.TestgitjenkinsdockerApplication</mainClass>
                    <layout>ZIP</layout>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>-->
            </plugin>

            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-war-plugin</artifactId>
                <version>3.0.0</version>
                <configuration>
                    <failOnMissingWebXml>false</failOnMissingWebXml>
                </configuration>
            </plugin>
        </plugins>
    </build>
</project>

主类：

package com.example.testgitjenkinsdocker;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.boot.builder.SpringApplicationBuilder;
import org.springframework.boot.web.servlet.support.SpringBootServletInitializer;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;

@SpringBootApplication
@RestController
public class TestgitjenkinsdockerApplication extends SpringBootServletInitializer {

    @Override
    protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
        return builder.sources(TestgitjenkinsdockerApplication.class);
    }

    public static void main(String[] args) {
        SpringApplication.run(TestgitjenkinsdockerApplication.class, args);
    }

    @GetMapping("hello")
    public void hello(HttpServletResponse response) throws Exception {
        response.getWriter().write("hello my first test git+jenkis+docker!");
    }
}

注意：这里要让war包工程可在自己的tomcat运行，尝试过几次只有这种方式可以。当然不是唯一，但其他方式未成功，待补充。

Jenkins新建该工程：

8.docker镜像构建脚本Dockerfile，及运行脚本deploy.sh

[[email protected] v1]# cat Dockerfile 
FROM tomcat:latest
MAINTAINER zjx [email protected]
WORKDIR /usr
COPY testgitjenkinsdocker-0.0.1-SNAPSHOT.war /usr/local/tomcat/webapps/
EXPOSE 8080
ENTRYPOINT /usr/local/tomcat/bin/startup.sh && tail -f /usr/local/tomcat/logs/catalina.out

docker build -t zjx/tomcat:0.0.1 .
docker run --name=tomcat001 -p 8087:8080  -idt zjx/tomcat:0.0.1

说明：如果需要，可以push到docker hub，其他人再拉去。
将创建的java web镜像push到docker hub上：
首先停止容器:docker stop
docker tag /[:]
如：docker tag imageid panjq/tomcat_test:1.0
docker login
docker push /:
如： docker push panjq/tomcat_test:1.0
将镜像从docker hub上拉下来：
docker pull panjq/tomcat_test:1.0
9. 运行
http://192.168.56.102:8087/testgitjenkinsdocker-0.0.1-SNAPSHOT/hello
结果：