An example of how to run database (MSSQL) integration tests.
The key point is that the container is lifecycled to the result from docker.run and the container is dropped when
that goes out of scope.
This is why spin_up_database returns the node that represents the container. If it didn't then the node would
go out of scope at the end of spin_up_database, the drop function would be called and the database container would
be stopped.
Also note: this runs the tests sequentially because each MSSQL database container is recommended at 4GB of RAM.
WARNING: this is all "prototype" code (i.e. hacky, here be dragons)
To run: cargo test -- --nocapture