The last time I talked about Docker, I mentioned several containers that I keep running 24/7. These are containers that I never spin down unless I'm updating them manually. Some readers had some fantastic suggestions for containers I hadn't tried yet. And for those who asked about containers that I don't actually keep running, I got to thinking about it, and there are definitely a few Docker containers that I only spin up when I need them. I was surprised to see that they're actually some of the most important containers I use.