Update Docker installation procedure
Update Docker installation procedure

jsenellart/OpenNMT,jsenellart-systran/OpenNMT,jsenellart-systran/OpenNMT,jsenellart-systran/OpenNMT,OpenNMT/OpenNMT,jungikim/OpenNMT,OpenNMT/OpenNMT,jungikim/OpenNMT,jsenellart/OpenNMT,jsenellart/OpenNMT,jungikim/OpenNMT,OpenNMT/OpenNMT