appengine-web.xml

<?xml version="1.0" encoding="utf-8"?>
<appengine-web-app xmlns="http://appengine.google.com/ns/1.0">
    <application>your-app-id</application>
    <version>v1</version>
    <threadsafe>true</threadsafe>

    <system-properties>
        <property name="repository.credentials.location" value="WEB-INF/users.txt"/>
        <property name="repository.cache-control.fetch" value="max-age=60, must-revalidate"/>
        <property name="repository.cache-control.list" value="no-store"/>
        <property name="java.util.logging.config.file" value="WEB-INF/logging.properties"/>
        <property name="jersey.config.server.mvc.templateBasePath.mustache" value="/WEB-INF/templates"/>
    </system-properties>
</appengine-web-app>