Switch from LibreSSL to OpenSSL
Switch from LibreSSL to OpenSSL

Building tor 0.4.4.7 under alpine 3.13.1 and libressl 3.1.5
generates an error.  The error is fixed by switching to OpenSSL.

Upstream issue: https://gitlab.torproject.org/tpo/core/tor/-/issues/40278
Resolves: #5

svengo/docker-tor