Introduction to DevOps

This chapter aims to quickly paint a big picture of what Docker is all about. It will give you some hands-on experience and a high-level view of images and containers, preparing you for more detail in the upcoming chapters.

We’ll break this chapter into two parts:

• The Ops perspective
• The Dev perspective

The ops perspective focuses on starting, stopping, deleting containers, and executing commands inside them.

The dev perspective focuses more on the application side of things and runs through taking application source code, building it into a container image, and running it as a container.

These two perspectives will give you a good idea of what Docker is all about and how the major components fit together.