[FooBarWidget]

To me, that does not make any sense. Your program executable is already like a Class. A normal process is already like instances of your classes. If all you want is OOP, then why are you using Docker? Your Unix system has been doing that for 30+ years!

[tomgruner]

The benefits of me that docker brings is the ability to share containers with my team and to deploy those same containers to the server. The reason that I started thinking of it in terms of programming, like OOP, was to help me get my head around how to correctly use docker on a server. As I start to understand docker, finding the correct place for configuration, data, crons, debugging, and execution are all important and the closest paradigm that I can easily apply to it is OOP, even though it is not a perfect match. OOP can also help visualize how one image can inherit from another image and override both methods and configuration of that image so that instances will behave in a different manner.