Docker Tutorial

In this Docker Tutorial, you’ll learn all the basic to advanced concepts like Docker installation, Docker container, Docker commands, Docker run, Docker images, Docker compose, Docker engine, Docker networking, etc.

Docker is a powerful tool used for developing, packaging, and deploying applications efficiently. Docker is a container management service. Docker was released in 2013. It is open-source and available for different platforms like Windows, macOS, and Linux. Docker is quickly shipping, testing, and deploying code.

So that it reduces your delay between writing code and running it in production. You can create self-contained environments known as containers. That can run consistently on different platforms.

You need to install the Docker engine on your computer or device. The Docker engine allows you to create and manage docker containers, docker images, docker hub, docker desktop, etc.

Introduction

If you are here, then it very obvious that you want to learn the Docker, so here in this section we have listed all the basic intro of Docker.

• Introduction to Docker
• Features of Docker
• Docker Architecture
• Docker Hub
• Docker Cloud

Docker Installation

This section will walk you through the steps of installing Docker on your system, whether it’s Windows, macOS, or Linux. We’ll cover the different installation methods, system requirements, and post-installation configurations to ensure you have Docker up and running smoothly, ready to build and run your containerized applications.

• Docker Installation on Windows
• Docker Installation on Windows using Chocolatey
• Docker Installation on Ubuntu
• Docker Installation on macOS
• Docker Installation on Arch-based Linux
• Docker Installation on RedHat

Docker Commands

In this part of the Docker tutorial we will dives into the essential commands you need to navigate the world of Docker. Whether you’re building, running, or managing containers, this guide equips you with the tools to control your containerized applications.

• Docker Instructions
• Run Commands Inside Containers
• USER Instruction

Docker Run

Docker Run refers to the command used in Docker to create and start containers based on Docker images. It’s a fundamental aspect of working with Docker, allowing users to deploy applications and services quickly and efficiently within isolated environments known as containers. Here in this section, you will get to know all the details about the Docker Run.

• Dockerfile
• Syntax of Dockerfile
• How to Build a Web Server Docker File?

Docker Images

A Docker Image contains everything a container needs to run, including the application code, libraries, dependencies, and the operating system it needs.

• Docker Images
• Working with Images
• Publish Docker Images in Hub
• Create a Customized Image
• Use Image Tags
• How to use Next.js Image
• How to use Local Image with Minikube

Docker Compose

Managing multiple containers can get complex! Docker Compose simplifies this process. In this section we have listed down all the details about the Docker Compose like intro and Compose tools.

• Introduction to Docker Compose
• Compose tools to run Multi Container Apps

Docker Engine, 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 Storage
• Docker Data Storage
• Backup Docker Container
• Manage Volumes using CLI

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 Networking
• Docker Ports
• Creating a Network and connecting a Container
• Connecting Two Docker Containers Over the Same Network
• Default Bridge Networking
• Create your own secure Home Network using Pi-hole and Docker

Docker Registry

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

• Docker Registry
• Docker – Public Repositories
• Docker – Private Registries
• Creating a Private Repository and Push an Image to That Private Repository
• Using Public Repositories To Host Docker Images

Docker Containers and Managing Containers

Explores this section to get to know about the fundamental concepts and practical aspects of utilizing Docker technology to deploy and manage software applications efficiently in this section.

• Containerization using Docker
• Docker Container Virtualization
• Docker Container for Node.js
• Remove Containers
• Push a Container Image to a Docker Repository
• Docker Container Linking
• Manage Containers using CLI
• Mount Volume inside Container
• Difference between Images and Container
• Difference between Virtual Machines and Containers
• How to Install Linux Package in Docker Container
• Copying Files to and from Docker Containers
• Run MongoDB as Container
• Container for Node.js
• Container for NGNIX
• How to Provide the Static IP to a Docker Container?

Docker Swarm

Docker Swarm steps in as your reliable organizer, making sure all your containers are in the right place and working well together. Go through this section to get an all about Docker Swarm.

• Introduction to Docker Swarm
• Difference between Kubernetes and Docker Swarm

Miscellaneous

• Running a Java Application using Docker
• Running a PHP Application using Docker
• Running a Python Application using Docker
• How to Dockerize an ExpressJS App?
• How to Dockerize a ReactJS App?
• Docker Vs Kubernetes
• Deploying WebApps on Docker
• Docker Continuous Integration
• Difference Between Vagrant and Docker
• How to Setup Jenkins in Docker Container?

Docker Container: A Docker container is a lightweight and executable package of software. It includes everything used to run an application, code, libraries, and dependencies. You don’t need to allocate any memory for the application. It can automatically generate space according to the requirements.

Why to learn Docker?

A couple of years back, when organizations needed other applications, they buy a server without knowing the performance requirement of the software/application. This results waste of money and resources. Then Virtual machines come onto the market, which allows engineers to run multiple applications on the same resource but as a completely different server. But Every application to run on a Virtual machine requires OS and every OS needs its own CPU, RAM, etc. to run. Which increases the cost.

Then Docker Model comes into the scope, which overcomes the drawbacks of the Virtual Machine. It reduces the wastage of resources by sharing OS, memory, and CPU, and It offers many benefits for developers and system administrators, like consistency, portability, efficiency, security, scalability, and version control. These benefits make it easier to manage and deploy applications.

Features of Docker

• Docker reduces the size of development by providing a smaller part of the OS via containers.
• It is easier to work on the same project by different teams with the help of Containers.
• Docker containers can be deployed anywhere, on any physical, or virtual machines and on the cloud.
• Docker containers are lightweight so, it becomes easy to scale them.

Advantages of Docker

• Docker uses less memory.
• The full operating system is not required to run an application.
• Containers run faster than the other Virtual Machines.
• It is lightweight.
• It allows us to use a remote repository to share your containers with other teams.
• To reduce the risks, it uses dependencies.

Disadvantages of Docker

• Complexity will increase due to layering.
• It is difficult to manage a large number of containers.
• For an application that needs better graphics, Docker is not suitable for it.
• Cross-platform compatibility is not allowed.

Conclusion

Docker is a software development framework that allows you to package and run apps inside virtual machines on a server. It’s often used to create and test applications before deploying them on a real, physical server. This allows organizations to test and deploy their applications quickly and with minimal resources. Docker also makes it easy to package and update apps on any server, regardless of its hardware configuration.

Docker Tutorial – FAQ

How does Docker work?

Docker uses containerization technology to create and deploy applications in a consistent and isolated environment. It utilizes a client-server architecture where the Docker client interacts with the Docker daemon to build, run, and manage containers.

What are the benefits of using Docker?

Using Docker can provide benefits such as improved developer productivity, increased application portability, efficient resource utilization, and simplified deployment and scaling of applications.

Is Docker the same as virtualization?

No, Docker uses containerization, which is a lightweight form of virtualization. Unlike traditional virtualization, containers share the host OS kernel and do not require a separate guest OS for each application.

How can I get started with Docker?

To get started with Docker, you can install Docker Desktop or Docker Toolbox based on your operating system. Then, you can create, build, and run your first Docker container using the available documentation and tutorials.

Can Docker be used in production environments?

Yes, Docker is widely used in production environments to streamline application deployment, facilitate continuous integration and continuous delivery (CI/CD), and enable efficient management of microservices-based architectures.