springboot打包不能运行问题。xxx.jar中没有主清单属性

pom.xml

<build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.1.RELEASE</version>
                <configuration>
                    <mainClass>com.jrt.docker.DockerFile</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

参考 https://blog.csdn.net/TetaiSon/article/details/93498181?utm_medium=distribute.pc_relevant.none-task-blog-blogcommendfrommachinelearnpai2-3.channel_param&depth_1-utm_source=distribute.pc_relevant.none-task-blog-blogcommendfrommachinelearnpai2-3.channel_param