I manage like 200 servers in Google cloud k8s but I don’t think I’d do that for home use. The core purpose is to manage multiple servers and assign processes between them, auto scaling, cluster internal network - running docker containers for single instance apps for personal use doesn’t require this kind of complexity
My NAS software has a docker thing just built into it. I can upload or specify a package and it just runs it on the local hardware. If you have a Linux shell, I guess all you really have to do is run dockerd
to start the daemon, make sure your network config allows connections, and upload your docker containers to it for running
VPNs don’t help here, the website asks you for your driver’s license. Tbf giving your credit card to them is typically enough for them (big tech + govt) to construct a full profile of who you are anyway, and that was the original “age gate” – though there are some services that make CCs modestly privacy preserving – not the case for IDs