Containers bring a skinny new world of virtualization to Linux

Advocates for containers argue that you don’t need a full copy of the operating system, never mind virtual representations of the hardware. Isn’t just enough of the operating system and system resources for just the program itself all you really need for your server applications? It turns out container fans were right. You can use one copy of an operating system to run multiple containers, each with an instance of an application, and this vastly reduces the system resources to run them.