> May as well just use a virtual machine at that point. While this isn't true (as explained by others), I don't know why there's such dismissal in the docker c

> May as well just use a virtual machine at that point. While this isn't true (as explained by others), I don't know why there's such dismissal in the docker community for a VM with ~zero boot time, good tools without requiring ssh (`docker cp`, `docker diff`, `docker exec`, volumes) and layers. These are good things! Of course packaging in a light-weight way is nice if you can manage that as well but it's not everything. > Nice and composable, reproducible infrastructure. Phusion passenger is also reproducible you're still using (the highly touted) Dockerfiles. I've no idea how you want to define composability.