In this case, the way to avoid fragmentation is not to merge but to standardize on the Docker APIs, just like Flynn does. Docker's job is to guarantee interop

In this case, the way to avoid fragmentation is not to merge but to standardize on the Docker APIs, just like Flynn does. Docker's job is to guarantee interop between PaaS-like components, so that you don't need to lock yourself into a single monolithic PaaS. Everything you build on Docker will benefit Flynn - and Deis, and Dokku, and Maestro, and dockermix, and custom platforms at Ebay, Uber, Cloudflare, Mailgun etc.