wtf is supabase-docker?

Supabase Docker gives you a way to run Supabase, an open-source backend platform for building apps, on your own computer or server. Instead of using Supabase's hosted cloud service, you download this project, run a couple of commands, and you have your own private instance of Supabase running locally at a web address you control. The setup strips out some parts of Supabase that not every project needs, specifically realtime features, file storage, and serverless functions. What you keep is the core: a database, user authentication, and the API layer. To get started, you copy a configuration file, fill in your details, and run a single command. The project uses Docker, which is essentially a tool that packages everything Supabase needs to run into a self-contained unit, so you do not have to install databases or web servers manually. This is useful for founders or small teams who want full control over their backend without paying for hosted plans, or who need to keep their data on their own infrastructure for compliance or privacy reasons. For example, if you are building an app and want users to sign in with GitHub, this setup makes it straightforward to configure that. You can also plug in your own email service to send password reset or invitation emails, customize the look of those emails with your own templates, and add SSL certificates so your instance runs securely over HTTPS. One notable tradeoff is the decision to remove realtime, storage, and functions. This keeps the setup lighter and simpler to manage, but if your app needs to handle file uploads, live data updates, or custom backend logic, you would need to add those services back or use another approach. The project is open-source under the MIT license, and the maintainer welcomes contributions via pull requests.