docker 的maven 插件

利用maven 插件，用于从Java服务中构建Docker映像。

<build>
    <plugins>
        <!-- docker的maven插件，官网：https://github.com/spotify/docker-maven-plugin -->
        <plugin>
            <groupId>com.spotify</groupId>
            <artifactId>docker-maven-plugin</artifactId>
            <version>1.1.1</version>
            <configuration>
                <!-- 注意imageName一定要是符合正则[a-z0-9-_.]的，否则构建不会成功 -->
                <!-- 详见：https://github.com/spotify/docker-maven-plugin    Invalid repository name ... only [a-z0-9-_.] are allowed-->
                <imageName>system-service</imageName>
                <baseImage>java</baseImage>
                <entryPoint>["java", "-jar", "/${project.build.finalName}.jar"]</entryPoint>
                <resources>
                    <resource>
                        <targetPath>/</targetPath>
                        <directory>${project.build.directory}</directory>
                        <include>${project.build.finalName}.jar</include>
                    </resource>
                </resources>
            </configuration>
        </plugin>

        <plugin>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-maven-plugin</artifactId>
        </plugin>

    </plugins>
</build>