I've used Docker in semi-production environments. Configuration abd dependency management is much improved, and more efficient than VMs. YAML configuration is

I've used Docker in semi-production environments. Configuration abd dependency management is much improved, and more efficient than VMs. YAML configuration is easy to hand edit. Docker doesn't have to rebuild an entire image for a minor application code or conf change. Incremental cache speeds up the build process. Scaleout with "worker" instances is quite easy to manage. For full production Elastic Beanstalk is worth a look. I prefer to host on DigitalOcean VMs for dev staging. Docker has a great local community in San Francisco.