alfio-event/alf.io — reverse-engineered prompt

Build me a self hosted ticket reservation and event attendance web app for conferences, workshops, meetups, and trade shows.

I want event organizers to have an admin area where they can create and manage events, offer tickets, see reservations, and keep track of who is attending. Visitors should be able to reserve tickets in a simple, clean flow that feels trustworthy and privacy friendly. The project should care about security, fair pricing, and not forcing organizers into a paid platform.

Please use the existing direction of this repo, Java 17 with a PostgreSQL database, and make it easy to run locally in development. Include a Docker Compose setup if possible, create the database automatically, and print or document the first admin login clearly. Add clear setup notes so someone can clone it, start it, and open the admin page in the browser without guessing.

Look up current docs online if you need to, but keep the first version practical and working.