Understanding the differences between Docker and LXD

In this chapter, we're going to explore both Docker and LXD and see examples of containers running in both. Before we start working on that though, it's a good idea to understand some of the things that set each solution apart from the other.

Docker is probably the technology most of my readers have heard of. It seems as though you can't visit a single IT conference nowadays without it at least being mentioned. Docker is everywhere, and it runs on pretty much any platform. There's lots of documentation available for Docker and various resources you can utilize to deploy it. Docker utilizes a layered approach to containerization. Every change you make to the container creates a new layer, and these layers can form the base of other containers, thus saving disk space. More on that later.

LXD (pronounced Lex-D) finds its roots in LXC, so it's important to understand that first before we talk about LXD...