About Docker
Docker is the standard platform for containerization. Package applications with their dependencies into portable containers that run anywhere.
Key Features
- Container runtime
- Dockerfile builds
- Docker Compose
- Docker Hub
- Multi-platform builds
- Docker Desktop
Docker fundamentally changed how software is built, shipped, and run. By packaging an application and all its dependencies into a standardized container, Docker eliminates the "works on my machine" problem. Containers are lightweight, start in seconds, and run identically on a laptop, in CI, and in production. Docker's ecosystem includes Docker Compose for multi-container applications, Docker Hub for image distribution, and Docker Desktop for local development. While container orchestration has largely moved to Kubernetes, Docker remains the standard for building container images and the default runtime in most development workflows.