What is Docker? Why Docker?

In the video, you will learn about What is docker, Why we need docker, How docker fits into the SDLC, the Architecture of Docker, and Why docker is so fast.

To ensure that your application functions flawlessly in every environment, whether it is being developed, tested, or used in production, Docker is the containerization platform that is used to package your application and all of its dependencies together in the form of containers. A tool called Docker is intended to make it simpler to develop, distribute, and run applications using containers.

Hypervisors, enable numerous Virtual Machines (VMs) to coexist on a single machine with its own operating system and operate Virtual Machines (VMs). Because each virtual machine (VM) has its own copy of the operating system, application, and essential components, it is much bigger and uses more resources.

Software development is the process of creating software for a variety of uses. Software development is a complex process that is not as straightforward as its definition might suggest. As a result, the developer must adopt an effective strategy in the form of the Software Development Life Cycle (SDLC). The SDLC outlines the task(s) that a software engineer or developer must do at each level. It guarantees that the finished product can satisfy the customer's requirements and stays within the allocated spending limit. Therefore, prior knowledge of the software development process is essential for a software developer. SDLC consists of 5 stages: Planning, Development, Push to GitHub, Testing, and Deployment.

A Docker Image is a file made up of several layers that is used to run code within a Docker container. They are a collection of guidelines for producing Docker containers. A runtime instance of an image is what a Docker Container is giving programmers the ability to package applications with all necessary components, including libraries and other dependencies. A Docker file is a text document with the necessary commands that, when executed, aid in building a Docker Image. Using a Docker file, a Docker image is produced.

Related article link:
https://www.geeksforgeeks.org/introduction-to-docker/
https://www.geeksforgeeks.org/containerization-using-docker/
https://www.geeksforgeeks.org/why-should-you-use-docker-7-major-reasons/
https://www.geeksforgeeks.org/software-development-life-cycle-sdlc/