Improved deployments, repeatable builds, easier monitoring, makes it platform-agnostic, easier networking, resource limits. There are many reasons. And, as oth

Improved deployments, repeatable builds, easier monitoring, makes it platform-agnostic, easier networking, resource limits. There are many reasons. And, as other people have pointed out, a docker container isn't a VM. It's a chroot process with a bunch of tooling around provisioning, networking, security, etc around it. One of the big wins of docker is that it allows you to ship file-systems around and run them as if they were binaries.