Agreed.

Containers... just work? Actually, Docker just works. It is rock solid and I'm very delighted I learnt so much of it.

The only thing I'm missing about Docker is a bigger focus on on-the-fly image editing. Like, I love to have these container development environments. I'd love to give some command inside the container and make it magically appear on the Dockerfile if it was successfully executed, so I don't have to manually copy things over when I want to have reproducibility for later.