Yes, agreed, there are already many good OSes that can run containers fine. I run many "containers" (jails) on FreeBSD, I don't need a specialized OS for this.

Yes, agreed, there are already many good OSes that can run containers fine. I run many "containers" (jails) on FreeBSD, I don't need a specialized OS for this. SmartOS can do this well. And like you said, Debian would be fine running Docker or whatever else.