Great job with the demo. It looks nice but I was unable to login...
On Glassfish 5, I created two users "user" and "admin" in the File security realm and mapped them to ROLE_USER and ROLE_ADMIN groups respectively. I then redeployed the app, but I still can't login successfully.
Any chance you could add a few more deployment and configuration instructions to the README.md so that I can replicate what you did?