All containers do that. Its nothing new just another implementation of the idea with its own idea about what is best. It only saves resources in the form of time if its a large scale operation and finally its just the last in a long line of similar solutions.
I’ve never even heard of NIX flakes before today. It looks like another soluion in search of a problem. I trust debian and I trust bare metal more than any container setup. I run multiple services on one machine. I currently have two machines to run all my services. No problems and no downtime other than a weekly update and reload. All crontabed, all automatic.
At work I have multiple services all running in KVM including some windows domain controllers. Also no problem and weekly full backups are a worry free. Only requiring me to checks them for consistency.
In short as much as people try to push containers they are only useful if you are dealing with more than few services. No home setup should be that large unless someong is hosting for others.
None. I run my services they way they are meant to be run. There is no point in containers for a small setup. Its kinda lazy and you miss out on how to install them.
I run pfsense as my router on a small form factor PC with two Ethernet cards. I run Wireguard which is pretty easy to setup in pfsense. I have the client installed on my PC at work and my mobile devices. I’m never more than a click from being connected to my home network.
In the past I used ssh tunnels with port forwards to the services I wanted to access remotely.
I upgraded mine last year. Went from a core 2 duo with 4gig of ram to a fifth generation I5 with 16 gig of ram. Installed pfblockerNG and now I don’t need any other device to have a decent filter.