What role does a container play in containerization of applications?

A container in application containerization is an isolated environment that contains all the necessary components to run an application: code, libraries, dependencies, and configurations.

Role of a container:

• Provides a consistent runtime environment across different machines, eliminating the "it works on my machine" problem.
• Isolates the application from the rest of the system, enhancing security and stability.
• Allows for quick deployment, scaling, and updating of applications.

For example, with a Docker container, you can package a Flutter application with the required SDK version and all dependencies to run it in any environment without additional configuration.