[Lifesnoozer]

T-SQL might have some oddities, but Microsoft distributes SQL Server as a Docker image, very easy to setup.

https://hub.docker.com/r/microsoft/mssql-server/

[Nullabillity]

That the setup is complex enough that they need a container should tell you enough.

[manigandham]

Containers have nothing to do with the complexity of the software, they are just a packaging format.

Yes, SQL server is complex software, and can be installed via apt-get as well.