Add repositories:
<repositories>
<repository>
<id>github</id>
<name>GitHub Apache Maven Packages</name>
<url>https://maven.pkg.github.com/ssimmie/artifact-repository</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>github</id>
<name>GitHub Apache Maven Packages</name>
<url>https://maven.pkg.github.com/ssimmie/artifact-repository</url>
<releases>
<enabled>true</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
Add dependency:
<dependencyManagement>
<dependencies>
<dependency>
<groupId>net.ssimmie</groupId>
<artifactId>build-tools</artifactId>
<version>20200316.04375ea</version>
</dependency>
</dependencies>
</dependencyManagement>
Configure plugins:
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-checkstyle-plugin</artifactId>
<version>${maven-checkstyle-plugin.version}</version>
<dependencies>
<dependency>
<groupId>net.ssimmie</groupId>
<artifactId>build-tools</artifactId>
<version>20200316.04375ea</version>
</dependency>
</dependencies>
<configuration>
<configLocation>ssimmie/checkstyle.xml</configLocation>
</configuration>
<executions>
<execution>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>