Could you please give a hint on what kind of stability issues you experienced? Do they still exist? My team is thinking about using Docker for high loaded system in production, and stability is one of our priorities here.
I don't personally operate docker in production, but googling "docker stability" or perusing their github issues should lead to the same anecdotes I'm referring to.
If you'll indulge me putting on my corporate hat for a minute: we've had some customers very happy scheduling a high volume of containers at a high rate on nomad: