准备工作

环境:

  • linux环境或mac,不要用windows
  • jdk 8
  • maven 3.0
  • docker

对docker一无所知的看docker教程

创建一个springboot工程

引入web的起步依赖,创建一个 Controler:

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@SpringBootApplication
@RestController
public class SpringbootWithDockerApplication {
 
    @RequestMapping("/")
    public String home() {
        return "Hello Docker World";
    }
    public static void main(String[] args) {
        SpringApplication.run(SpringbootWithDockerApplication.class, args);
    }
}

  

将springboot工程容器化

Docker有一个简单的dockerfile文件作为指定镜像的图层。让我们先创建一个 dockerFile文件:

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src/main/docker/Dockerfile:
 
FROM frolvlad/alpine-oraclejdk8:slim
VOLUME /tmp
ADD springboot-with-docker-0.0.1-SNAPSHOT.jar app.jar
RUN sh -c 'touch /app.jar'
ENV JAVA_OPTS=""
ENTRYPOINT [ "sh""-c""java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar" ]

  

我们通过maven 构建docker镜像。

在maven的pom目录,加上docker镜像构建的插件

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<properties>
   <docker.image.prefix>springio</docker.image.prefix>
</properties>
<build>
    <plugins>
        <plugin>
            <groupId>com.spotify</groupId>
            <artifactId>docker-maven-plugin</artifactId>
            <version>0.4.11</version>
            <configuration>
                <imageName>${docker.image.prefix}/${project.artifactId}</imageName>
                <dockerDirectory>src/main/docker</dockerDirectory>
                <resources>
                    <resource>
                        <targetPath>/</targetPath>
                        <directory>${project.build.directory}</directory>
                        <include>${project.build.finalName}.jar</include>
                    </resource>
                </resources>
            </configuration>
        </plugin>
    </plugins>
</build>

  

注意:${docker.image.prefix} 为你在 docker官方仓库的用户名,如果你不需要上传镜像,随便填。

通过maven 命令:

第一步:mvn clean

第二步: mvn package docker:bulid ,如下:

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Step 2/6 : VOLUME /tmp
—> Running in a98be3878053
—> 8286e98b54c5
Removing intermediate container a98be3878053
Step 3/6 : ADD springboot-with-docker-0.0.1-SNAPSHOT.jar app.jar
—> c6ce13e50bbd
Removing intermediate container a303a3058869
Step 4/6 : RUN sh -c ‘touch /app.jar’
—> Running in cf231afe700e
—> 9a0ec8936c00
Removing intermediate container cf231afe700e
Step 5/6 : ENV JAVA_OPTS “”
—> Running in e192597fc881
—> 2cb0d73bbdb0
Removing intermediate container e192597fc881
Step 6/6 : ENTRYPOINT sh -c java $JAVA_OPTS -Djava.security.egd=file:/dev/./urandom -jar /app.jar
—> Running in ab85f53fcdd8
—> 60fdb5c61692
Removing intermediate container ab85f53fcdd8
Successfully built 60fdb5c61692
[INFO] Built forezp/springboot-with-docker
[INFO] ————————————————————————
[INFO] BUILD SUCCESS
[INFO] ————————————————————————
[INFO] Total time: 01:45 min
[INFO] Finished at: 2017-04-19T05:37:44-07:00
[INFO] Final Memory: 19M/48M
[INFO] ————————————————————————

  

镜像构建成功。查看镜像:

docker images

显示:

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forezp/springboot-with-docker latest 60fdb5c61692 About a minute ago 195 MB

  

启动镜像:

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$ docker run -p 8080:8080 -t forezp/springboot-with-docker

  

打开浏览器访问 localhost:8080;浏览器显示:Hello Docker World。 
说明docker 的springboot工程已部署。

停止镜像:

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docker stop 60fdb5c61692

  

删除镜像:

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docker rm 60fdb5c61692

  

posted on 2019-01-07 10:58  巨象  阅读(245)  评论(0编辑  收藏  举报