This is useful for us.<p>We've been using containers rather heavily in our infrastructure for a few years now (neither rocket, nor docker) and we've developed our own toolset to handle the container images, and to manage the containers.<p>Even though although it kind of deprecates a lot of our work, I really see the value in having a standard that can be used with different container runtimes, and I'll be looking at migrating our internal format to the app container specs. Having tools like this to handle migrations makes a lot of sense to me. We can continue developing our tools, without marrying a specific backend.