What is docker? And how is it works?

Published on December 03, 2024

46Views

2min read

What is Docker? And How Does It Work?

Docker has become a cornerstone of modern software development, revolutionizing how applications are built, shipped, and deployed. But what exactly is Docker, and how does it work? This blog will demystify Docker and explain its role in simplifying development workflows.

What is Docker?

Docker is an open-source platform that enables developers to automate the deployment of applications inside lightweight, portable containers. These containers bundle everything an application needs to run, including code, libraries, dependencies, and runtime, ensuring consistency across different environments.

Key Features of Docker:

Portability: Run the same container on your laptop, testing server, or production environment.
Isolation: Containers run in isolated environments, preventing conflicts between applications.
Efficiency: Containers share the host system's kernel, making them lightweight and faster than virtual machines.
Scalability: Easily scale your application by spinning up multiple containers.

Install Docker using the apt repository

Before you install Docker Engine for the first time on a new host machine, you need to set up the Docker apt repository. Afterward, you can install and update Docker from the repository.

Set up Docker's apt repository.

Install the Docker packages.

Install Portainer CE with Docker on Linux

Deployment

Then, download and install the Portainer Server container:

Portainer Server has now been installed. You can check to see whether the Portainer Server container has started by running docker ps:

Now that the installation is complete, you can log into your Portainer Server instance by opening a web browser and going to:

Tags:

docker

devops

containers

Comment on DEV Community:

https://dev.to/rizkyhaksono/what-is-docker-and-how-is-it-works-282a

No Comment.