I didn't see a brief description for this community, so please excuse me if I'm off topic.

Small victories: I set up my first containerized WordPress application with the whole nine yards. Object cache, DB, PHP, web server in separate containers connected together by a simple and readable compose file. The task was easy. What was hard was changing the way I think about running a server as this monolithic thing. True, it's all on one physical server in the end, but the changes in mindset are becoming more difficult for me as I get older. I had always hated Docker as this wasteful oxymoronic "serverless" thing, but then I saw how I could use it to control dev environments. From there I've started to understand when the tool makes sense. For the first time, I feel like I get it.