Docker is a technology that lets a VM use resources of the host (threads, etc) directly, so you get VMs that are super super light weight. With Docker, even your laptop can run 100 VMs, all with different OSes and customizations (though linux only) without breaking a sweat.
CoreOS is a special linux flavor designed to be used specifically in this role, making the VMs even MORE light weight (and has features to coordinate multiple VMs working together.)
DigitalOcean allows you to host VMs in the cloud. Now you have the full shebang: A hosting provider designed to run an OS designed to run efficiently as a VM.
CoreOS is a special linux flavor designed to be used specifically in this role, making the VMs even MORE light weight (and has features to coordinate multiple VMs working together.)
DigitalOcean allows you to host VMs in the cloud. Now you have the full shebang: A hosting provider designed to run an OS designed to run efficiently as a VM.