Docker Tutorial (original) (raw)

Last Updated : 19 Feb, 2026

Dockeris a tool that simplifies the process of developing, packaging, and deploying applications. It solves the _“works on my machine” problem by ensuring code runs identically across environments.

Docker Introduction

Before starting with Docker, we first need to set up docker on our system and run a simple program to verify the installation

Docker Commands

Docker provides a set of commands that let you build, manage, and run containers easily:

Dockerfile and Images

ADockerfile is a simple text file with instructions that tell Docker how to build an image, such as which software to install and how the app should run.

Docker Hub

Docker Hub is Docker’s official cloud-based registry where developers store, share, and download Docker images. It acts like a central library of pre-built images — for example, you can pull images of databases (MySQL, MongoDB), programming languages (Python, Node.js), or even full applications.

Docker Compose

Docker Compose is a tool that lets you run and manage multiple Docker containers together as a single application. Instead of starting each container manually, you define all services (like app, database, cache) in a docker-compose.yml file with their configurations.

Docker Engine and Storage

Docker Engine, also known as Docker Daemon, is the core component of the Docker platform responsible for running and managing Docker containers. Explore this section to get all details about Docker Engine:

Docker Networking

Docker Networking refers to the set of mechanisms and technologies Docker provides for communication between Docker containers, as well as between containers and the outside world. Go through this section to get more details about Docker Networking:

Docker Registry

After learning the Docker Networking, in this Docker tutorial, we are going to discuss Docker Registry which is refer as central repository for storing the and managing Docker image.

Docker Volumes

Docker Volumes are a way to store data outside of a container’s filesystem so that the data isn’t lost when the container stops or is deleted. By default, anything you create inside a container is temporary, but with volumes, you can keep files (like databases, logs, or configs) in a safe and reusable location managed by Docker.

Docker Swarm

Docker Swarm is Docker’s native tool for clustering and orchestrating multiple containers. It lets you group several Docker hosts (servers) into a single cluster, called a **swarm, and run containers across them as if they were one system.

Docker Vs Kubernetes

**Docker

**Kubernetes