This post shows how to run a SQL Server Instance on about any computer using Docker Containers. Your next step might be to get a sample database into that SQL Server Instance.
Thanks to Microsoft, you can get their sample databases as T-SQL scripts. You can use these to install these databases on whatever server you are connected to, including your “containerized” SQL Server instance.
It’s been a while since I’ve used Northwind, but sometimes you just need a simple database.