Rkt
Container Linux, formerly known as CoreOS, was developed in 2013 as a very small Linux distribution optimized as a host for running containers. They started with using Docker, but in 2014 they switched to their own container technology, Rkt, which is heavily dependent on systemd-nspawn. In January 2018, the company behind Container Linux was acquired by Red Hat.
While it is perfectly possible to install Rkt on other distributions (for more information, visit https://coreos.com/rkt/docs/latest/distributions.html), in this section I'm going to use Container Linux. You can simply deploy via the latest stable version via the Azure Portal or use the Azure CLI/PowerShell method.
In the Azure Marketplace, Container Linux is still available under the old name CoreOS at the time of writing. This will change in the near future.
Getting started with Rkt
The virtual machine is ready to go, just log in and the most important utility is available at your service is rkt. There is no daemon involved!
Execute...