springboot+fabric8多层layer部署docker

springboot多层layer可以更高效的发布docker镜像,fabric8插件可以在pom.xml完成docker的build和push，两者结合大大方便了生产发布镜像文件！

Dockfile代码:

FROM openjdk:18.0.2.1-jdk-oracle as build
ARG EXTRACTED=/springbuild
RUN mkdir ${EXTRACTED}
COPY target/*.jar ${EXTRACTED}
RUN cd ${EXTRACTED} && java -Djarmode=layertools -jar *.jar extract

FROM openjdk:18.0.2.1-jdk-oracle as deploy
WORKDIR /etc/springboot
ARG EXTRACTED=/springbuild
COPY --from=build ${EXTRACTED}/dependencies/ ./
COPY --from=build ${EXTRACTED}/spring-boot-loader/ ./
COPY --from=build ${EXTRACTED}/snapshot-dependencies/ ./
COPY --from=build ${EXTRACTED}/application/ ./

ENTRYPOINT ["java","org.springframework.boot.loader.JarLauncher"]

Dockerfile文件放在项目根目录下面即可

pom.xml fabric8代码:

<project>
    <>省略相关业务代码</>
   <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>io.fabric8</groupId>
                <artifactId>docker-maven-plugin</artifactId>
                <version>0.40.1</version>
                <configuration>
                    <images>
                        <image>
                            <name>registry.cn-hangzhou.aliyuncs.com/zhqn/${project.artifactId}:${project.version}</name>
                            <build>
                                <dockerFileDir>${project.basedir}</dockerFileDir>
                                <filter>@</filter>
                            </build>
                        </image>
                    </images>
                    <dockerHost>tcp://192.168.10.10:2375</dockerHost>
                    <imagePullPolicy>IfNotPresent</imagePullPolicy>
                    <authConfig>
                        <username>${env.DOCKER.REGISTRY.USERNAME}</username>
                        <password>${env.DOCKER.REGISTRY.PASSWORD}</password>
                    </authConfig>
                </configuration>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>build</goal>
                            <goal>push</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

运行命令: mvn clean compile package -Dmaven.test.skip=true -Ddocker.registry.username=test -Ddocker.registry.password=test ,就可以编译和发布docker镜像。

相关文档:

Spring Boot Layer Index

docker plugin fabric8