title: DigitalOcean and docker swarm between regions
body: <p>I'm building docker swarm cluster for my backend and wanna join nodes from different regions for example manager on NY1 and one node in London and another two in Singapore for better balancing and fast access, but the problem is - DigitalOcean don't provide private network between data centers   (only between droplets inside one region. So my question is it possible to connect droplets on different data centers by using maybe special network adapter?</p>