You can run docker in docker. I do that all the time (but via scripts so I know it does docker in docker, but I don't know how they do that).
But again, I wasn't even trying to run HA in docker, I was running in a VM container and still the above is refused by default.
Maybe, but the documentation says it can't be done.
note too that I wasn't running docker but instead a vm.
https://www.home-assistant.io/installation/ Home assistant container - the version for docker - doesn't support add-ons. If you go through a lot of effort you can make it work, but you won't get help. (easiest is to install some linux in the docker and then home assistant supervised on top of that)
There is no reason HAOS couldn't run just fine in a container (qemu not docker), but they intentionally detect that and break it (I tried, I probably could make it work but I don't have that much time)
Home Assistant insists that it must run on bare metal hardware and will not work well. This is a purely artificial limitation that home assistant puts on you. You can work around it with a lot of effort, or the limitations might not matter to you, but it is a limit to be aware of. I personally went to OpenHAB instead, but YMMV.
Since you have Proxmox why would you switch? If you don't like it, then by all means, there are lots of other options. However there is a good reason Proxmox comes up a lot. (I don't personally use Proxmox so I don't know those reasons, but the people who recommend it give every indication they are smart people who understand the problem and so I trust them enough to say it is a good option)
Best is a subjective question. There is no objective way to say what is best. We can argue about pros and cons. We can argue about what we prefer. However that is all subjective and there is no one best answer.
California has done enough to kill that proejct even without Elon/Trump. For the amount of time and money invested they should be operating the entire line from San Diego to Oregon as of a few years ago.
As an American I've never heard of a place so dangerous that things get stolen from the back at a traffic light. I know carpenters who leave all their tools in the back when they go to bed and never have a problem. Maybe you need to clean up the crime problem in your country. There are pros and cons to a van vs truck. That you come in on one side does not make the other side wrong, it just means you have lack of vision to understand theirs.
Have you ever tried to rent a truck? I know many people who tried and discovered the place was all out that day. Then when you find one read the fine print - often you cannot haul your fridge in one. Mean while because I own my truck it is there when I need to do something, no thinking required.
A small block V8 weights 680lbs. While there are larger engines, that is still a big engine, most cars have much lighter engines. Transmissions have some weight too, So do electric motors.
Vehicles are expensive. Having one for each need is expensive. Renting is expensive (and renting typically comes with no using it as a truck restrictions). If you need a bed for 2% of trips it is often far cheap to own and drive a truck for everything. Particularly if you can use the bike for a lot of trips that makes just owning a truck for everything compelling if you must have a car.
A station wagon would be nice to see as well for a family hauler.
Kohls doesn't have it always on sale. They carefully rotate stock each week to half their stuff is up front and on sale, while the other half is in the back at normal prices. The staff will direct you awat from the normal priced stuff - they don't want anyone to pay the normal price, they just need to have it as normal price once in a while so they can claim to have a sale. (they fear if you buy the normal price you will be mad enough to not come back and repeat sales are worth more than one full price transaction)
Most of the big ones have. Oil is still where most of their money comes from, but they often have various wind and solar divisions as well.