title: Dummy UI or how to run sikuli in headless mode
body: <p>I'm doing test automation when I faced a problem a digest authentication I'm using watir for my automation, watir couldn't access the alert window which demands username and password, watir  with its browser.alert.set method can only access username field.
  I found a solution in sikuli but it needs UI and I need to run this test case on server which doesn't have any UI,I'm using headless in watir test cases can I have something like headless browser in UI to run this test case, like a dummy UI or something or how to run sikuli in headless mode.
  Or any solution on my other question <a href="https://stackoverflow.com/questions/12710287/how-to-enter-password-in-a-popup-using-watir">How to enter password in a popup using watir?</a></p>