I've been using the container service for a few months. I have encountered a case where my running containers completely disappeared and was told by support that this was because of a "migration". They claimed to have notified me beforehand on several occasions, but I have no evidence of this. Hopefully this was a one time occurrence and will lead to greater stability.

One other general problem I've had is the time it takes to launch a container. I would expect containers to be an improvement over VMs in terms of how quickly you can launch, but that doesn't seem to be my experience so far.

I would wait a while longer before I would consider their container services for production workloads.