Digital ocean: sort of like Heroku? https://en.wikipedia.org/wiki/DigitalOcean http://stackshare.io/digitalocean
Docker: --written in go has a seattle meetup group http://www.zdnet.com/article/what-is-docker-and-why-is-it-so-darn-popular/ https://en.wikipedia.org/wiki/Docker_(software) https://docs.docker.com/mac/ https://hub.docker.com/
Go: -- going to want to learn some eventually https://en.wikipedia.org/wiki/Go_(programming_language)