title: How can I have my Filter before a javax.websocket Upgrade
body: <p>I want to write my own "ServletContainerInitializer" that adds my local filter to the ServletContext. And I also want to manage ordering of ServletContainerInitializer invocation so that my local filter will get register and hit by the request before the websocket upgrade filter. </p>
  
  <p>I want to know how to initialize my local ServletContainerInitializer ? </p>