I've had success running several things on Dokku, on top of a $5/month DigitalOcean droplet. You do have to create a swapfile to compensate for how little RAM t

I've had success running several things on Dokku, on top of a $5/month DigitalOcean droplet. You do have to create a swapfile to compensate for how little RAM there is, but after that Dokku is very easy to set up, and provides Heroku-style git push deployment for many different languages and environments. It also makes it very easy to set up databases (postgres, redis, memcached, etc...), and as an added bonus there's a great Let's Encrypt plugin that makes adding TLS a ten second job.