Spring Boot教程(三十三) springboot程序構建一個docker鏡像

準備工做

環境:html

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

對docker一無所知的看docker教程java

建立一個springboot工程

引入web的起步依賴,建立一個 Controler:linux

@SpringBootApplication
@RestController
public class SpringbootWithDockerApplication {

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

將springboot工程容器化

Docker有一個簡單的dockerfile文件做爲指定鏡像的圖層。讓咱們先建立一個 dockerFile文件:web

src/main/docker/Dockerfile:spring

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" ]

咱們經過maven 構建docker鏡像。docker

在maven的pom目錄,加上docker鏡像構建的插件windows

<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} 爲你在 docker官方倉庫的用戶名,若是你不須要上傳鏡像,隨便填。瀏覽器

經過maven 命令:springboot

第一步:mvn cleanoracle

第二步: mvn package docker:bulid ,以下:

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] ————————————————————————

鏡像構建成功。查看鏡像:

docker images

顯示:

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

啓動鏡像:

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

打開瀏覽器訪問 localhost:8080;瀏覽器顯示:Hello Docker World。 
說明docker 的springboot工程已部署。

中止鏡像:

docker stop 60fdb5c61692

刪除鏡像:

docker rm 60fdb5c61692

源碼來源

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