What is Docker? Docker is an open-source platform designed to automate the deployment, scaling, and management of applications using containerization. Containers allow developers to package an application with all its dependencies—such as libraries, frameworks, and configuration files—into a single, portable unit that can run consistently across different environments. In simpler terms, Docker ensures that an application runs the same way on a developer’s laptop as it does on a production server. Why Docker? Before Docker, developers often faced the “it works on my machine” problem. Applications behaved differently across environments due to variations in operating systems, dependencies, or configurations. Docker solves this by isolating applications in containers that include everything needed to run them. Key Benefits of Docker Portability : Containers can run on any system that supports Docker, regardless of the underlying hardware or operating system.…