What are the main principles of using containers that you know?

Principles of container usage:

1. Isolation — containers isolate applications and their dependencies from the rest of the system, allowing multiple containers to run on a single host without conflicts.

2. Lightweight — containers share the host OS resources, so they occupy less space and start faster than virtual machines.

3. Repeatability and portability — containers ensure that an application will work the same way in any environment where the container engine is installed.

4. Manageability — containers are easy to create, update, scale, and delete using orchestration tools (e.g., Kubernetes).

5. Minimalism — containers contain only the components necessary for the application to run, reducing the attack surface and simplifying maintenance.

Example: a developer packages a web application with the required Python version and libraries into a container, which can then be run on any server with Docker without additional configuration.