jetty-overlay-deployer/src/test/resources/home/overlays/templates/root/WEB-INF/overlay.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE Configure PUBLIC "-//Mort Bay Consulting//DTD Configure//EN" "http://jetty.eclipse.org/configure_9_3.dtd">


<Configure class="org.eclipse.jetty.server.handler.ContextHandler">
  <Set name="contextPath">/</Set>
  <Set name="handler">
    <New class="org.eclipse.jetty.server.handler.ResourceHandler">
      <Set name="welcomeFiles">
        <Array type="String">
          <Item>index.html</Item>
        </Array>
      </Set>
      <Set name="cacheControl">max-age=3600,public</Set>
    </New>
  </Set>
</Configure>