Heck I only remember Docker _losing_ features over time. Docker machine, docker swarm, etc. all relegated to the dust bin despite filling useful roles.
The dust is settling and people are starting to realize that Kubernetes is too complex for a lot of cases. This is where things like acorn.io try to live, but this all feels like trying to get back to the same experience Swarm had.
Wut docker swan never went away, I used it everyday. It was a misleading blog post made by some tech journal, which blew docker-ee dropping swarm in favor of another orchestrator.
Ce still has it.
It still exists but there is zero development on it. They left it in a kind of half finished state imho with some pretty annoying gaps in the workflow around updating configs/secrets, one time tasks, etc. There's zero future or updates in its roadmap: https://github.com/docker/roadmap/issues/175
The dust is settling and people are starting to realize that Kubernetes is too complex for a lot of cases. This is where things like acorn.io try to live, but this all feels like trying to get back to the same experience Swarm had.