Section 04 challenges

[bkatiemills]

04-Dockerhub is in good shape, but also needs challenges. Off the top of my head:

• download your partner's image. How did that compare speed-wise to downloading the hadleyverse image the first time? (It was super fast since docker is smart enough to not re-download the base hadleyverse image, and only had to grab your changes).
• something about searching dockerhub for an interesting project?

also I assume 04-commit can be abandoned as 04-dockerhub covers that material?

[HeidiSeibold]

also I assume 04-commit can be abandoned as 04-dockerhub covers that material?

I think so, yes.

[HeidiSeibold]

Challenges sound good to me.