You can use the following configuration in your pom.xml to run the DOCCK Plugin everytime the project is built and send its output to a file.
<project>
...
<build>
<plugins>
...
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-docck-plugin</artifactId>
<version>1.2</version>
<executions>
<execution>
<configuration>
<output>target/docck-results.txt</output>
</configuration>
<goals>
<goal>check</goal>
</goals>
</execution>
</executions>
</plugin>
...
</plugins>
</build>
...
</project>