install -d -m 0700 -o ubuntu -g ubuntu ~ubuntu/.ssh
wget --no-check-certificate -O - https://raw.github.com/mitchellh/vagrant/master/keys/vagrant.pub > ~ubuntu/.ssh/authorized_keys.tmp
install -m 0600 -o ubuntu -g ubuntu ~ubuntu/.ssh/authorized_keys.tmp ~ubuntu/.ssh/authorized_keys
rm -f ~ubuntu/.ssh/authorized_keys.tmp

install -d -m 0755 -o root -g root /var/run/sshd
exec /usr/sbin/sshd -D