TechCrunch

Docker containers are one of the hottest technologies around and CoreOS, a Linux-based operating system for very large server deployments, built its service around Docker containers and contributed heavily to the project. But as the company announced today, it is now working on its own container runtime, largely because it disagrees with Docker’s overall direction.

“We thought Docker would become a simple unit that we can all agree on,” CoreOS CEO Alex Polvi writes in today’s announcement. “Unfortunately, a simple re-usable component is not how things are playing out. Docker now is building tools for launching cloud servers, systems for clustering, and a wide range of functions: building images, running images, uploading, downloading, and eventually even overlay networking, all compiled into one monolithic binary running primarily as root on your server.”

Polvi argues that in the early days of Docker, it looked like the company was working on a…

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