A container is a unit of software that packages code and any of its dependencies so that the application it contains can continue to run well across various developing environments. It contains everything an application might need in order to run by itself, such as its code, libraries, or necessary settings.
Containers ensure that a software is separate from its original environment and is compatible others that may have minute differences. They are both lightweight and secure.
Source:
“What Is a Container?” Docker, www.docker.com/resources/what-container/. Accessed 25 Jan. 2026.
I liked your explanation of containers, especially how you pointed out they package code with dependencies so apps run consistently across environments. I agree this separation helps avoid small setup issues, and the lightweight, secure note is a nice touch.