You must create simple sign in page with it's backend for checking access by email+password. You should check correct form of email and password: e-mail address must have '@' symbol, and password must have more then 8 symbols. After checking input data you should send request on server. If there is such email and password in database, server will return OK result. The page must represen it by string under the login form or redirection on the other page.
Create Docker-file and launch this project in Docker container.