Can you explain this Docker thing?

Quite often I have been asked to explain Docker. In my videos I usually deploy my extensions to a Microsoft Dynamics 365 Business Central running on Docker, but what does it actually mean? In this video, I create a Docker container “from scratch” using the brilliant Container Wizard.

https://youtu.be/Ln8olup9Gt8

If you want to know more about the basic operation of Docker, this video is a great source.