container

A container is a lightweight, standalone, executable package that includes everything needed to run a piece of software, including the code, a runtime, libraries, environment variables, and configuration files.

Containers are isolated from each other and the host system, but they share the host system’s kernel, which makes them more efficient than traditional virtual machines and requires less storage space.

Containers are portable across different computing environments, which simplifies the development, testing, and deployment of applications.