jetty-distribution-with-logback/src/main/assembly/jetty-assembly.xml

<assembly>
  <formats>
    <format>tar.gz</format>
    <format>tar.bz2</format>
    <format>zip</format>
  </formats>
  <fileSets>
    <fileSet>
      <directory>${assembly.directory}</directory>
      <outputDirectory></outputDirectory>
      <includes>
        <include>**</include>
      </includes>
      <excludes>
        <exclude>**/META-INF/**</exclude>
        <exclude>*-config.jar</exclude>
      </excludes>
    </fileSet>
  </fileSets>
</assembly>