Commit Briefs
fix dockerfile
now we have also some sub-directories, COPY . . is more future-proof at this point.
add a configure script and some compat
tested on openbsd, alpine and void
drop mention to the static target
it works on OpenBSD but not on alpine, it requires further tweaks.
simplify flow when SNI is missing
this also gives a chance for users to use the default host even if SNI is missing.