Docker still has a long way to go in terms of local development ergonomics. Recently, I finally had my chance to on board a bunch of new devs and have them create their local environment using Docker Compose (we're working on a pretty standard Rails application).

We were able to get the environments set up and the app running, but the networking is so slow to be pretty much unusable. Something is wrong with syncing the FS between docker and the host OS. We were using the latest Docker for Mac. If the out of the box experience is this bad, it's unsuitable for local development. I was actually embarrassed.