How can I get a cache backup into a dockerized deployment of cache?

I am trying to get data out of a cache backup. I am completely new to Intersystems Cache.

I got a docker image of Cache from this post: 

I want to get the data from my backup into this docker image. First, I need access to a gui and a cli, then I need some instructions or documentation for actually pulling in the backup data.

Thanks! This is all new, so pardon my lack of knowledge here. If I can provide any more information let me know.