Docker 101 Tutorial

In the Docker Deep Dive, developers go from no knowledge of Docker to knowing absolutely everything they need to know. If you’ve never used Docker before, this is the best course for you. Docker for the Absolute Beginner walks you through what Docker is, how it is used to improve DevOps, and how it can be used in real-world applications. You’ll see demos on how to set up Docker, develop your proficiency with Docker commands, and create your own Dockerfiles. I thought already present layers could be re-utilised when building Docker images.

  • You’ll even learn about a few advanced topics, such as networking and image building best practices.
  • With docker, you can pretty easily scale your infrastructure as per your needs.
  • Gain the skills and hands-on experience you’ll need to excel in any DevOps role.
  • With this DevOps Tutorial guide for the beginners, you have the basic idea about the tool and basic commands too that can be used to set up an application.

Docker projects play a pivotal role in enabling continuous integration and continuous deployment (CI/CD) practices. CI/CD aims to automate the entire software delivery process, from code changes to production deployment. A docker image is a small, standalone, workable package of computer code.

Docker 101 Tutorial

You run Unit Tests, Automation Tests, and Code Quality Checks. These are all automatically executed in a Continuous Integration Pipeline. The most popular CI/CD tool during the early Agile period was Jenkins. Agile brought Docker for DevOps Lessons the business and development teams together into one team, which works to build great software in small iterations called Sprints. A Docker container, on the other hand, is a runnable instance of a Docker image.

Docker for DevOps Lessons

For the Linux system, Docker is usually available as a distribution package manager. Using the installation wizard, the user can install Docker on any machine. Docker installer can be located on the community page of Docker. When you know what is docker, you must know the reasons why it is preferred across the globe. To understand the Docker basics, you must also look at some of the benefits. Here, we will help you in understanding Docker from the scratch.

Importance of Automation

This means that many firms are embracing cloud practices and concepts like containerization. This article will explore what Docker is and its role in DevOps. Jenna Inouye currently works at Google and has been a full-stack developer for two decades, specializing in web application design and development.

If you don’t see your container, make sure that it was started successfully and is still running. If the container exited for some reason, it won’t show up when running docker ps. In this case, you can use docker ps -a to see all containers, not just the ones that are running.

Free Courses — Learn in 10 Steps

After running a Docker container, you can check its status using the docker ps command. An in-house team is dedicated to the companies to answer the questions. Standardization also plays an instrumental role in automation.

Docker and DevOps both intend to promote collaboration among various teams involved in a software life cycle. Although the two platforms offer a broad range of development, business, and cultural benefits, they have some drawbacks as well. The good news is these pitfalls can be overcome by using the two concepts together. A Docker image is composed of multiple layers stacked on top of each other. Each layer represents a specific modification to the file system (inside the container), such as adding a new file or modifying an existing one.