Host image on CCV docker hub

[cpaniaguam]

I looked into hosting a docker image on CCV's account on docker hub. An action could be added to update the image upon merges to main. We did something like that in IceFloeTracker.jl. What do you think of that idea, @hollandjg?

I'm sure we could, or we could put one on GHCR, but I'd be tempted just to stick with the Dockerfile – it doesn't take long to build the environment with the Dockerfile and the extra effort might not pay off. Maybe make it into an issue we could potentially solve later if it looks like it will be worth the extra effort?

Originally posted by @hollandjg in #123 (comment)