What is Docker?

What is Docker?
Docker is an open platform for building, shipping, and running applications. It separates apps from infrastructure, letting you manage both the same way. Using Docker’s methods for shipping, testing, and deploying code helps reduce the time from development to production.

The Docker platform
Docker lets you package and run applications in lightweight, isolated containers. Containers include everything needed to run the app, work consistently across environments, and can be shared to ensure identical results for everyone.

Docker architecture
Docker uses a client-server model: the client communicates with the Docker daemon, which builds, runs, and manages containers. They can run on the same system or remotely, using a REST API over UNIX sockets or a network. Docker Compose is another client for managing multi-container applications.

Credit : https://docs.docker.com/get-started/docker-overview/