im-server/pom.xml

<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <netty.version>4.1.68.Final</netty.version>
        <source.version>1.8</source.version>
        <target.version>1.8</target.version>
    </properties>

    <groupId>cn.wildfirechat</groupId>
    <artifactId>wildfirechat-parent</artifactId>

    <packaging>pom</packaging>
    <version>1.1.8</version>
    <name>Wildfire Chat</name>
    <description>Wildfire Chat Server</description>
    <inceptionYear>2019</inceptionYear>
    <url>https://www.wildfirechat.cn</url>

    <licenses>
        <license>
            <name>The Apache License, Version 2.0</name>
            <url>http://www.apache.org/licenses/LICENSE-2.0.txt</url>
        </license>
        <license>
            <name>Eclipse Public License - Version 1.0</name>
            <url>http://www.eclipse.org/org/documents/epl-v10.php</url>
        </license>
    </licenses>


    <modules>
        <module>broker</module>
        <module>common</module>
        <module>sdk</module>
        <module>distribution</module>
    </modules>

    <build>
    <pluginManagement>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>${source.version}</source>
                    <target>${target.version}</target>
                </configuration>
            </plugin>
            <plugin>
              <groupId>org.apache.maven.plugins</groupId>
              <artifactId>maven-checkstyle-plugin</artifactId>
              <version>2.17</version>
              <configuration>
                  <configLocation>checkstyle.xml</configLocation>
                  <suppressionsLocation>checkstyle-suppressions.xml</suppressionsLocation>
                  <!--
                     <configLocation>/google_checks.xml</configLocation>
                   -->
                  <failOnViolation>true</failOnViolation>
                  <consoleOutput>true</consoleOutput>
              </configuration>
              <executions>
                <execution>
                  <phase>validate</phase>
                  <goals>
                    <goal>check</goal>
                  </goals>
                </execution>
              </executions>
            </plugin>
        </plugins>
    </pluginManagement>    
    </build>

    <profiles>
        <profile>
            <id>release-sign-artifacts</id>
            <build>
                <plugins>
                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-source-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>attach-sources</id>
                                <goals>
                                    <goal>jar</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>

                    <plugin>
                        <groupId>org.apache.maven.plugins</groupId>
                        <artifactId>maven-javadoc-plugin</artifactId>
                        <executions>
                            <execution>
                                <id>attach-javadocs</id>
                                <goals>
                                    <goal>jar</goal>
                                </goals>
                            </execution>
                        </executions>
                    </plugin>
                </plugins>
            </build>
        </profile>
    </profiles>
</project>