Docker is a popular, open-source platform that enables developers to create, deploy, and manage applications within lightweight, portable containers. Docker simplifies the process of packaging applications and their dependencies, ensuring consistency across development, testing, and production environments.

Features of Docker:

• Packages applications and their dependencies into isolated containers, ensuring consistent environments across different platforms.
• Containers can run on any system that supports Docker, including cloud environments, virtual machines, and physical servers.
• Easily scale applications by running multiple container instances and orchestrating them with tools like Docker Swarm or Kubernetes.
• Docker images provide versioning, making it easy to roll back to previous versions of an application.

To check docker version: docker --version