What is docker

Docker is a tool designed to make it easier to create, deploy, and run applications by using containers. Containers allow a developer to package up an application with all of the parts it needs, such as libraries and other dependencies, and ship it all out as one package.

Using Docker, developers can package their applications into lightweight, stand-alone, executable packages called containers that can run on any Linux machine. This allows them to run their applications in any environment and ensure that the applications will always run the same, regardless of the environment in which they are deployed.

Docker has become popular in recent years due to its ability to make it easier to develop, test, and deploy applications. It allows developers to work on their applications without worrying about the underlying infrastructure and makes it easier to deploy applications to different environments, such as staging, testing, and production.

Overall, Docker is a powerful tool that helps developers build, deploy, and run applications in a consistent and reliable way.