http://www.smashcompany.com/technology/docker-protects-a-pro...

And then scroll down to where you see this:

UPDATE 2018-07-09

And read that Slack conversation. That is a real conversation that actually happened. We lost 3 days trying to fix that bug, which in the end was a complex interplay of the Docker cache and the way the Dockerfile was written.

This is the sales pitch for Docker:

docker-compose up -d

But that Slack conversation is the reality.