Node JS Add On Container

I’d like to take a swing at building a node app to run on my raspi that’s got hassio installed. However, I’m not familiar with docker at all, and have no idea where to get started.

Essentially, I’m looking for a way to get a docker container to be accessible via ssh, so that I can installed node.js on it and do some development. Is there a sample add-on repository on github that will help me get started? Can anyone point me to helpful resources?

Thanks,
James