Docker

Dockers 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 deploy it as one package. By doing so, thanks to the container, the developer can rest assured that the application will run on any other Linux machine regardless of any customized settings that machine might have that could differ from the machine used for writing and testing the code

VM

Microservices

Container

VM vs Container

Docker Concepts

Docker Engine

Docker Hub

Volumes

Images

Networking

Compose

Swarm