teableio/teable ? reverse-engineered prompt

I want to build a self-hostable, open-source alternative to Airtable. The core of it should be a powerful database that users interact with through a simple, spreadsheet-like interface. It needs to be fast and capable of handling millions of rows, so let's use a real database like Postgres to back it.

The main features should focus on team collaboration in real-time. Users need to be able to create different views for their data, including a standard grid, a Kanban board, a calendar view, a gallery for images, and a form for easy data entry. They should also be able to do all the standard spreadsheet stuff like filtering, sorting, and grouping data, plus support for formulas and attaching files. Please build this as a modern web app and make it easy for someone to deploy with Docker.