upgrade tor package from v0.4.5.9-r0 to v0.4.5.10-r0 (see links below)
https://gitweb.torproject.org/tor.git/plain/ChangeLog
https://git.alpinelinux.org/aports/commit/community/tor?id=b2aec05acfa2bf2a191f41f24ed213f883e648e9
https://github.com/fphammerle/docker-tor-proxy/commit/5a9d489a1d08c967584ee6b38dee94683dd0d47b