Description Video Tutorial(Valid?) - Generator different, commands different, outcomes different.

[DanJ210]

YouTube Tutorial

When I follow the tutorial given in the description of this repository... Everything seems pretty much the same for the most part. When I get to the part where the tutorial does ./dockerTask.sh, this does not work for me I can only get it to work if I add build to the end of it like ./dockerTask.sh build. It does successfully build the image, does not run the container automatically like shown in the tutorial and if I try to create one myself, I cannot get the container to stay running.

So is the tutorial still valid and helpful if things have changed to the point where it's not showing me what to do anymore?

Don't get me wrong I really appreciate all the help and the tutorial. Just trying to learn.