Book Image

Learn Docker - Fundamentals of Docker 18.x

By : Dr. Gabriel N. Schenker
Book Image

Learn Docker - Fundamentals of Docker 18.x

By: Dr. Gabriel N. Schenker

Overview of this book

Docker containers have revolutionized the software supply chain in small and big enterprises. Never before has a new technology so rapidly penetrated the top 500 enterprises worldwide. Companies that embrace containers and containerize their traditional mission-critical applications have reported savings of at least 50% in total maintenance cost and a reduction of 90% (or more) of the time required to deploy new versions of those applications. Furthermore they are benefitting from increased security just by using containers as opposed to running applications outside containers. This book starts from scratch, introducing you to Docker fundamentals and setting up an environment to work with it. Then we delve into concepts such as Docker containers, Docker images, Docker Compose, and so on. We will also cover the concepts of deployment, orchestration, networking, and security. Furthermore, we explain Docker functionalities on public clouds such as AWS. By the end of this book, you will have hands-on experience working with Docker containers and orchestrators such as SwarmKit and Kubernetes.
Table of Contents (21 chapters)
Title Page
Packt Upsell
Contributors
Preface
Index

Chapter 3. Working with Containers

In the previous chapter, you learned how to optimally prepare your working environment for the productive and frictionless use of Docker. In this chapter, we are going to get our hands dirty and learn everything that is important to work with containers. Here are the topics we're going to cover in this chapter:

  • Running the first container
  • Starting, stopping, and removing containers
  • Inspecting containers
  • Exec into a running container
  • Attaching to a running container
  • Retrieving container logs
  • Anatomy of containers

After finishing this chapter you will be able to do the following things:

  • Run, stop, and delete a container based on an existing image, such as NGINX, busybox, or alpine
  • List all containers on the system
  • Inspect the metadata of a running or stopped container
  • Retrieve the logs produced by an application running inside a container
  • Run a process such as /bin/sh in an already-running container.
  • Attach a Terminal to an already-running container
  • Explain in your own...