Having used both plain LXC and BSD Jails before Docker was a thing, and now using Docker after, I can say much of this is true. But there's a fundamental additi

Having used both plain LXC and BSD Jails before Docker was a thing, and now using Docker after, I can say much of this is true. But there's a fundamental additional point: Docker's marketing has increased its' usage for application development in general, and now it has become technically useful because of the resulting ecosystem they grew around that. Docker Hub is quite useful if you just want to deploy some app quickly -- usually it's already been done for you.