I’m a retired Unix admin. It was my job from the early '90s until the mid '10s. I’ve kept somewhat current ever since by running various machines at home. So far I’ve managed to avoid using Docker at home even though I have a decent understanding of how it works - I stopped being a sysadmin in the mid '10s, I still worked for a technology company and did plenty of “interesting” reading and training.
It seems that more and more stuff that I want to run at home is being delivered as Docker-first and I have to really go out of my way to find a non-Docker install.
I’m thinking it’s no longer a fad and I should invest some time getting comfortable with it?
Docker is a QoL improvement over plain VMs/LXCs if you want easy-to-go content/FOSS applications bubdled into a system.
I would personally use Podman since Docker uses root by default, and Podman doesn’t (there’s options for both, just FYI), and Ansible/Terraform have made IaC a breeze (ah, the good days of orchestration), but I will never use Docker because of the company behind them and because of convoluted Docker networking that I can’t be arsed to learn. Other than that, have fun! This is just my opinion anyway