Community maintained Docker config for the knot server

slim down image size #52

Open cosmichorror.dev
targeting main from cosmichorror.dev/knot-docker:smol
Open opened by and assigned to cosmichorror.dev
targeting main from cosmichorror.dev/knot-docker:smol
Commits 3

remove bash in favor of existing sh
set no password over random hex
avoid storing `apk` cache files