Practical Docker Tutorial for Modern Developers

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Docker Tutorial: Table of Contents

Lesson 1: An Introduction to Docker 

Docker is an open platform that enables users to develop, ship, and run applications with ease. Docker software is packaged as containers- a docker standardized unit. These containers have all the elements, such as system tools, libraries, runtime, etc required by the software. In this lesson, you will learn all the basics of Docker and how to set it up along with a guide on choosing the right plan as per your needs.

Lesson 2: Advantages and Components of Docker

Docker is considered a better alternative to a virtual machine for several reasons. In this lesson, we highlight Docker's advantages by comparing its functions with those of a virtual machine. This lesson also discusses how Docker works and its different components, such as Docker client and server, Docker image, Docker registry, and Docker container.

Lesson 3: Installing Docker on Windows 

There are several benefits to working with Docker on Windows. This lesson will help you understand these advantages, provide some basic requirements and specifications for installing Docker on Windows, and provide a step-by-step guide to installing it on Windows.

Lesson 4: Installing Docker on Ubuntu

Docker can also be installed on Ubuntu. Some of the advantages of installing it on Ubuntu are that various containers can run on the same hardware, high productivity, and easy configuration, among others. The lesson familiarizes you with the steps involved in installing Docker on Ubuntu.

Lesson 5: Docker Versus Virtual Machine 

Both Docker and virtual machines were introduced to solve various challenges using a container platform. However, it can be tricky to understand whether you should opt for Docker or a virtual machine for your organization. In this lesson, you will learn about Docker and VM, some basic differences between the two, and which one makes for a better choice for your requirements.

Lesson 6: Docker Container

Docker containers contain all the elements required to run the software. Determining and deploying a Docker container requires Docker Compose, an open-source tool. In this lesson, you will learn everything about Docker containers, how to define and deploy them using Docker Compose, and their benefits.

Lesson 7: Dockerfile

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. This lesson will familiarize you with important Docker commands that will help you understand how to create a Dockerfile and how to create Docker Images and Docker Containers with the help of a Dockerfile. You will also find easy-to-understand examples that assist you in understanding the practical implementations of these elements.

Lesson 8: Docker Compose

Docker Compose is a crucial element of Docker that helps render web-based applications highly productive. While one of the previous lessons provides you with a brief explanation of Docker Compose, this lesson aims at building an in-depth understanding of Compose, its benefits, some basic commands in Docker Compose, and how to install Docker Compose and create the Compose file.

Lesson 9: Docker Swarm

Docker Swarm is an orchestration management tool running on Docker applications to help end-users create and deploy a cluster of Docker nodes. In this lesson, you will learn about Docker Swarm and other important elements, such as Docker Daemon. We also highlight the features of Docker Swarm, its working, and some of the key concepts, and compare Kubernetes and Docker Swarm. At the end of the lesson, you will find a comprehensive demo on Docker Swarm for beginners.

Lesson 10: Docker Networking

Users can link a Docker container to multiple networks using Docker networking. Go through this lesson to understand what Docker networking is, what its advantages are, and how it works. The lesson also familiarizes you with the container network model, network drivers, and some basic Docker networking commands that help you have a practical understanding of Docker networking.

Lesson 11: Docker Commands 

Using Docker essentially means having a good understanding of the most important commands that you will need to use. This lesson is designed to help you with that by listing crucial Docker commands, such as container commands, Docker share commands, some general commands, Swarm commands, and Docker Compose commands, to help you explore the world of Docker with ease. 

Lesson 12: Docker Interview Questions with Answers

If you’re planning to attend a software engineering interview for a job role that requires you to understand Docker, this lesson will be extremely useful. We have listed the top 25 Docker interview questions that are commonly asked, along with their answers, to streamline your preparation for the interview.