hello-world-service/gcube/extra-resources/WEB-INF/web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
	version="4.0">
	<display-name>Hello World</display-name>
	<description>
		A gcube HelloWorld service - smartgears 4
	  </description>
	<servlet>
	    <servlet-name>HelloWorld</servlet-name>
		<servlet-class>org.glassfish.jersey.servlet.ServletContainer</servlet-class>
		<init-param>
            <param-name>jersey.config.server.provider.packages</param-name>
            <param-value>org.gcube.service.helloworld.services</param-value>
        </init-param>
	</servlet>
	<servlet-mapping>
		<servlet-name>HelloWorld</servlet-name>
		<url-pattern>/*</url-pattern>
	</servlet-mapping>
</web-app>