What is Docker?
Docker is mainly a software development platform and a kind of virtualization technology that makes it easy for us to develop and deploy apps inside of neatly packaged virtual containerized environments. Meaning apps run the same, no matter where they are of what machine they are running on. Docker containers can be deployed to just about any machine without any compatibility issues so your software stays system agnostic, making software simpler to use, less work to develop, and easy to maintain and deploy. These containers running on your computer or server act like little microcomputers with very specific jobs, each with their operating system and their own isolated CPU processes, Memory, and Network resources. And because of this, they can be easily added, removed, stopped, and started again without affecting each other of the host machine.