You don’t learn in production. We’re talking about running production workloads here, not a localised lab. You can learn just fine locally with or without docker and other tooling that “eases” deployment of software. But when it comes to production it’s best to have a solid idea of what you’re doing and what a real production system requires.

Sadly, when people learn locally with “docker compose up” that becomes their baseline, their reality, and they believe everything else is taken of for them. Actually, you’re still running a process that’s bound to a network port (but with extra steps, because you used a container), and the entire ecosystem around that still needs to be secured.

That’s what’s been lost as of late :-(