Hello,
Your task is quite easy. I propose this page is coded as following
1. Code: we can use php or code igniter
2. Page code as you request: login page, user press button to login queue, press a button log out.
3. This page can host on cloud.
4. I can build a demo if you need to see.
Please let me know if you have any question.
Regards,
Vu Le