Can you explain what Docker is and what it is used for?

Docker is a platform for building, shipping, and running applications in isolated containers. Containers allow you to package an application along with all its dependencies and configurations into a single image, which can be run on any machine with Docker without additional setup.

Used for:

• Ensuring consistent development, testing, and production environments.
• Simplifying deployment and scaling of applications.
• Isolating applications from each other on the same server.

For example, you can create a Docker image with a C# application that contains the .NET runtime and all necessary libraries, and run this image on a server without installing additional components.