We'd love to see one standard too. Personally, I think it's good to have a lot of competing solutions right now (ECS vs Kubernetes, Docker vs Rocket, etc) and we'll see things settle in the next couple of years as containerization becomes more common.
For anyone looking at a Dokku alternative, Cloud Foundry isn't one.
Openshift is nice though.
I'm not sure why that's a problem. If you want something that's actually like heroku like in terms of uptime and what not, you need something that can manage the health of the cluster. Dokku's cool, but it doesn't make sense for anything you actually need to depend on. If it doesn't make sense to pay for the overhead of running your own paas, just use Heroku instead.
And OpenShift ist great, especially Origin M5 which is coming, soon tm.
Like how? Better, okay it's in the eye of the beholder. But secure? Faster? Shenanigans.
IF you want to just get started with Cloud Foundry, you install Lattice, it's one VM. In an HA setup (not the target but possible), it's 5 VMs.
Cloud foundry is about 20 VMs, and is what happens when you say "and then I want..." About 5 times: multi tenancy, role based access control, auto recovery health management, service brokerage, multiple DNS domains, app staging, etc. wherein people will otherwise just build on their own ...