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What is Docker? – Architecture, Image and Command List

Docker is an open-source platform, that can get installed with a simple click.

It is a tool that allows developers to create, deploy, run, and manage applications within its containers.

The above “container” term will be explained later in the blog.

The software design of docker makes it secure and reliable for its users. The major companies which use the respective tool are Spotify, Twitter, Pinterest, and Paypal.

Now we will be elaborating more on docker & its subtopics :

Table of Content

Kindly go through our explanation video in order to get a better understanding

Introduction to Docker

It is one of the many tools which is used in DevOps to make the work of users a lot easier.

The issue that the development team commonly faces is that the project is completely functional in one’s system but when deployed to other systems it fails to give the expected output.

Here’s where docker enters the picture, it gives the users space where they can code, create and run a project without worrying about the configuration, system compatibility, and other constraints that are usually faced by the developers when they try to share their work with one or more than one system.

It is the software that resolves the issue of an unsuitable environment for applications, sites, and products so that it can perform its task platform independently, irrespective of system compatibility.

Want to know more about Docker in detail, enroll in Docker Certified Associate (DCA) Certification Training Course

Diction of Docker



Learn more about Docker Tutorial for Beginners!

Docker Architecture

Docker Architecture

Docker is built around the client-server architecture. With the help of docker, we can manage containers, docker images, data volume, and networks.

It is a monolithic application, which means one package or one specific thing will contain almost everything. Docker has components that have specific tasks to do:

Docker Client

It is a way of interacting with the docker.

The user sends the request in form of commands, these commands can be to build, run, pull, and maybe remove.

A Command Line Interface is responsible for the execution of the request that is made by users.

Docker Host

This component provides the services of Docker Daemon.

Daemon is responsible for accepting the command from the client and performing operations like managing the containers and managing docker images.

Docker Container

Kindly refer to the above definitions, about daemon we will understand the containers.

Docker Image:

Docker Registry

The Registry is an open-source, scalable server-side application that stores the mages, it is stateless.

To get images, Docker Registry is responsible. It provides storage and distributes the docker images.

You just have to learn its basic commands like start, pull, tag, push, pull, stop and remove, and you are good to go.

Docker Command-Line

The world of technology has included Docker on a fundamental level. Let’s go over some fundamental commands to get you familiar with Docker:

The above-mentioned command will help you to understand the working of docker more clearly. Let’s further understand why we need docker.

Want to excel in your interview? Refer to our Top Docker Interview Questions and Answers.

Why & When to use Docker?

Using docker easies the task in the technical field where you have to develop a site and also put configurations into it.

Docker lets you ship faster, flawlessly move code and also save resources because of its optimality.

Docker provides a robust environment for the application that is to be built.

Containers are easy to deploy, if an error occurs, it will be easy to identify, and rolling back to the previous state can be done.

In order to create a website that utilizes advanced and diverse technologies, it is advised to use Docker.

Career Transition


Docker is an emerging technology that has eased the work of developers and testers.

Users can do their tasks without worrying about system compatibility when they transfer their product from one device to another.

If a person wants to walk shoulder to shoulder with time as well as with work then this software is for them.

Still in doubt? Contact us at our Community Page!

The post What is Docker? – Architecture, Image and Command List appeared first on Intellipaat Blog.

Blog: Intellipaat - Blog

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