MinIO was a previously open source blob store. It's pretty old, it was basically created right around the time S3 took off.

You should probably reconsider going with it in 2026 unless you're fine with their new (non -opensource) offering. It still has a "free" license, so it might still be an option depending on your priorities.

But there are alternatives around, some being arguably much easier to run/maintain for small deployments like this.