Docker is a platform for developers and sysadmins to develop, ship, and run applications. With Docker, you can build an application from source code in a few minutes, without having to install any software on your computer. You can also use Docker to quickly and easily deploy your applications to servers in the cloud.
Docker is based on Linux containers, which provide isolation between applications running on the same server. Containers are created by running a single command, and they can be stopped and started at any time. You can also use containers to migrate applications from one server to another.
Docker is used by thousands of companies around the world, including IBM, Google, and Microsoft.