Docker is an open-source platform that automates the deployment, scaling, and management of applications. It uses containerization to package up an application with all of its dependencies into a standardized unit for software development.
Docker is used for several reasons:
1. It enables consistent and replicable application development, which reduces issues when moving software between different environments.
1. It provides isolation for your applications, meaning you can run several applications with different dependencies on the same machine.
1. It makes it easier to scale your applications. You can quickly start, stop, and replicate containers when necessary, which is particularly suitable for applications with variable demand.
1. It supports continuous integration/continuous deployment methodology which is a key component in agile methodology.
1. Overall, it speeds up the development process and reduces the time it takes to bring applications from development to production.
In essence, Docker allows developers to focus on writing code without worrying about the system that it will be running on. It works on a principle of “build once, run anywhere.”
