Could always use LXCs they’re lighter weight than a VM but they’re IMHO more complicated to get started with than Docker / Podman as there isn’t as big an ecosystem, unless you run a hypervisor that supports them. If you run a hypervisor then Proxmox and I think OpenStack are they only two I know that support them natively.
Yeah that’s going to depend a lot on the images you’re running. If it’s a published one the likely it’ll have a compose or at least a one liner to get it running. But yeah there can always be issues with hard coded IDs and if you want to give the host folders 777 or limit them. Are you running selinux and that’s going to get in the way. Did they not mention capabilities that needed to be added?
And if you’re building your own or extending that a whole other ball of wax.
And I typically run on k8s so that adds a whole other layer of complexity. But I’ve been using it for years and I’m actually more comfortable with it than just docker or podman.
Yeah, this is self hosting after all. If you don’t expect some challenges to work though then you’re not gonna not have a good time.
Even if properly setup it could still go to spam until you get your reputation score up which with low volumes will take ages.
Maybe one day I’ll get time to test Proxmox alternatives but I have a lot of playbooks I’d need to migrate if I went with something else.