Honestly, I wish rkt would get some more momentum. In my opinion it's superior to Docker.

where's the Rocket Hub? Seriously how long is Docker Hub expected to float up there? Some are good quality, all the versions of tomcat for example. How long can such quality continue to exist?

That would be https://quay.io/ , but also the internet. Since rkt (or appc discovery rather) just relies on DNS/URL hierarchy to refer to images. Any web server can be a "registry".

OCI doesn't have an equivalent to discovery yet, but presumably it'll be something similar to the appc spec (https://github.com/appc/spec/blob/master/spec/discovery.md)

I'm one of the people working in the OCI community. Discovery/distribution is something that I care alot about personally and the whole "any web server can be a registry" idea is definitely where I want OCI to go with this. As someone who helps develop a distribution (openSUSE / SUSE Linux Enterprise) my opinion is that the current state of distribution really needs to be improved.

I also recently talked to some CoreOS devs at Dockercon and have started considering extending rkt to better support OCI runtimes (and images though images are "supported" at the moment). Exciting times.

There's https://quay.io but it doesn't really function as a marketplace for official images (except the ones from CoreOS).

I wish the market of container images had more competition. Right now there's Docker Hub/Quay (expensive, lots of features) and Amazon ECR/Google Container Registry (cheap, few features).

rkt runs docker images and OCI images. https://coreos.com/rkt/docs/latest/running-docker-images.htm...