What is a container?

In a cloud server, a container is like a blank box used for storing application data. It stores files, libraries, dependencies, and configuration together in a single package inside the container. The main advantage is that the same application can run in different environments without changing its code.

Example:

If you go to the office with a lunch box and open it at lunch time, you get the same food that you packed in the morning. So, here the lunch box acts as a container.