15: Security in Docker
Good security is all about layers, and Docker has lots of layers. It supports all the major Linux security technologies as well as plenty of its own. And the best thing… many of them are simple and easy to configure.
In this chapter, we’ll look at some of the technologies that can make running containers on Docker very secure.
When we get to the deep dive part of the chapter, we’ll divide things into two categories:
- Linux security technologies
- Docker security technologies
Large parts of the chapter will be specific to Linux. However, the Docker security technologies section is platform agnostic and applies equally to Linux and Windows.
Security in Docker - The TLDR
Security is all about layers. Generally speaking, the more layers of security the more secure something is. Well… Docker offers a lot of security layers. Figure 15.1 shows some of the security-related technologies we’ll cover in the chapter.