The Complete Docker Course for Developers

For the last eight years, she has worked as a news and feature writer focusing on technology and finance, with bylines in Udemy, SVG, The Gamer, Productivity Spot, and Spreadsheet Point. An intermediate-level course, Docker in Depth has been developed in partnership with Docker. The course covers the benefits of using Docker, when you would use Docker, and how to manage applications and orchestrate applications with Docker Compose and Docker Swarm. Some docker courses are designed for a certification path or offer their own certificates — others don’t. And if you’re an advanced user looking to use Docker and Kubernetes together, it may be a better idea to apply yourself to a combined Docker Kubernetes online course. It includes an operating system, libraries, and everything you need to run your application.

Docker is a popular open-source containerization platform that is widely used in DevOps practices for creating, deploying, and managing applications. Virtual machines (VMs) are software-based emulations of physical computers that allow multiple operating systems and applications to run on a single physical host machine. Virtual machines emulate the functionality of a physical computer, including its hardware components such as CPU, memory, storage, and network interfaces. VMs create isolated virtual environments with their own operating systems, applications, and resources, enabling developers to run diverse environments on the same physical hardware. Dockerfile is a text file that has instructions for building Docker images. Docker images are read-only files and include several instructions that need to be executed to create a Docker container.

A note on Containers Vs. Virtual Machines

You create the VM which has it’s own totally separate OS, libraries, and so on. This process takes at least a few minutes if not a half hour. Then you need to load the applications to the VM, which takes even more time. When you use Docker, you basically get to skip this entire process.

This course covered the key points that I was struggling with after playing with Docker for several days on my own. The instructor was easy to understand and covered the topics I needed to understand. There are quick challenges at the end of videos, which is awesome, giving learners hands-on experience and reinforces what you just watched. I haven’t seen this type of general interest in a tool since the early days of Rails. Docker is here to stay and my motivation for making this course is to share everything I’ve learned about using Docker in development so you can start using and enjoying it.

Information about the Docker Advanced certification:​

We will discuss more security aspects as we move forward in this course. The container is now running, but we haven’t attached to it. To do so, run docker attach followed by the name of the container. Examples are sufficient to demonstrate real-world use and facilitate applying what is learned outside of the course.

Docker for DevOps Lessons

Each container is an isolated environment, inside which your application can be run. Below are the most commonly used options while you are running your application inside the container. Images are built in a layered approach, where every instruction in the Dockerfile creates a layer in the image.

Lesson 6: Docker Container: What is It and What are Its Benefits?

Docker Hub is a cloud-based registry service that allows Docker users and partners to create, test, store, and distribute container images. You can use Docker Hub to find shared applications, manage automated builds for your organization, and more. Docker containers package applications and dependencies into standalone units that can run consistently across different environments. Containers provide a consistent and reproducible runtime environment, ensuring that the application runs the same way across different stages of the development lifecycle.

  • In addition to signing up for a Docker training course, consider looking at some Docker tutorials online and going through Docker interview questions and answers.
  • As the cybersecurity landscape continues to evolve, DevSecOps has emerged as a critical approach to building secure applications.
  • This course introduces Docker to an Absolute Beginner using really simple and easy-to-understand lectures.

Since it’s containerized into a single package, it won’t cause dependency collision issues. Alright, now that we’re back on our host, how to we see what containers we currently have set up? And finally, we have assignments to put your skills to the test. You will be given the challenge to solve Docker for DevOps Lessons using the skills you gained during this course. This is a great way to gain real-life project experience and work with the other students in the community to develop a Dockerfile and get feedback for your work. The assignment will push you to research and develop your own Docker images.

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