Basically some sort of democratic case law
Electricity vs. energy. Electricity is only part of energy.
I tried to compare some backup solutions a while back: https://hedgedoc.ptman.name/kket4uo9RLiJRnOhkCzvWw#
Forget about docker. Run caddy or some similar webserver that is a single file next to the assets to serve.
https://en.wikipedia.org/wiki/Multi-factor_authentication :