As an industry, we hadn't put down on paper what it means to build, execute or discover a container. If you wanted to sit down and write software to build or e

As an industry, we hadn't put down on paper what it means to build, execute or discover a container. If you wanted to sit down and write software to build or execute a container, there wasn't a spec to follow or a checklist of the features you needed to support. Basically, you had no idea if what you wrote today would continue to work in the future. Or if someone else constructed a container, that you could run it. (CoreOS employee)