Docker is a leading platform for containerization, a technology that allows you to package an application and its dependencies into a standardized unit called a container. Containers provide a consistent and isolated environment, ensuring that the application runs reliably across different environments, from development to production. Docker's key components include:
Docker Engine: The core technology that creates and manages containers. It consists of a server, an API, and a command-line interface.
Docker Image: A lightweight, standalone, and executable software package that includes everything needed to run an application, such as code, runtime, system tools, and libraries.
Docker Container: An instance of a Docker image, running in an isolated environment. Containers are portable, consistent, and efficient, enabling rapid deployment and scaling.
Docker Hub: A cloud-based repository where you can find and share Docker images, promoting collaboration and reusability.