Docker

Docker is a set of products that uses operating system-level virtualization to deliver software in packages called containers. It automates the deployment of applications within these lightweight containers, allowing them to run consistently across various computing environments.

The core software that runs and manages these containers is called Docker Engine. Docker was first released in 2013 and is developed by Docker, Inc.

Key components of Docker include:

• Docker daemon (dockerd): A persistent process that manages Docker containers and handles container objects.
• Docker client (docker): A command-line interface (CLI) that allows users to interact with Docker daemons.
• Docker objects: These include images, containers, and services. A Docker container is a standardized, encapsulated environment for running applications. A Docker image is a read-only template used to build containers. A Docker service enables containers to be scaled across multiple Docker daemons, forming a “swarm.”

Containers are isolated from one another and bundle their own software, libraries, and configuration files. They use fewer resources than virtual machines because they share the services of a single operating system kernel. Docker can package an application and its dependencies into a virtual container that can run on various operating systems like Linux, Windows, or macOS.

Web Site

• Docker Official Website

Tools

• Docker Engine
• Docker CLI
• Docker Compose
• Docker Desktop

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