为什么会有Docker出现

Docker is a tool that can package an application and its dependencies in a virtual container that can run on any Linux server. This allows developers to easily create, deploy, and run applications without having to worry about setting up a complex development environment.

Docker was created in 2013 by Solomon Hykes while working for dotCloud, a cloud hosting company. He was inspired by a project called LinuX Container (LXC), which allows multiple isolated Linux systems to run on a single server.

Docker containers are similar to LXC containers, but they are more portable and can run on any Linux server that has the Docker runtime installed.

Docker is used by developers and system administrators to create, deploy, and run applications. It is also used by companies to packaging applications for easy distribution and deployment.

Docker has become popular because it makes it easy to package and deploy applications. It also has a large community of users and developers who contribute to its development.