Docker

Container platforms are application solutions that allow developers to build, test, and ship applications in resource-independent environments. Each container comprises a complete runtime environment including the specific application, its libraries, source code, configurations, and all its dependencies. Container platforms offer orchestration, automation, security, governance, and other capabilities.

DevOps heavily relies on containerization and microservices for efficient application development and deployment with Docker and Kubernetes as the most widely used container technologies.

Key Features

1. Containerization Technology
   • Docker is a containerization platform that allows you to package applications and their dependencies into isolated containers. Containers encapsulate everything an application needs to run, ensuring consistency across various environments.
2. Portability and Consistency
   • Docker containers are lightweight, portable, and ensure consistency between development, testing, and production environments. This eliminates the common "it works on my machine" problem.
3. Image-Based Deployment
   • Applications are packaged as Docker images, which include the application code, runtime, libraries, and dependencies. These images can be easily shared and deployed on any system that supports Docker.
4. Isolation
   • Docker containers provide process isolation, meaning each container runs in its own environment, isolated from other containers and the host system.