[docker] add emacs-nox and a way to just build the binaries for the android emulator on macos
[docker] add emacs-nox and a way to just build the binaries for the android emulator on macos

frostwire/frostwire-jlibtorrent,frostwire/frostwire-jlibtorrent,frostwire/frostwire-jlibtorrent