Docker is an open source container orchestration system based on LXC technology. It allows developers to deploy applications by packaging them up as containers. Discover how Docker makes applications easier to manage, faster to develop and more secure. In this article we’ll explore Docker’s architecture, user interface and commands.

What is Docker? | IBM

What is Docker

Docker is an open source platform that allows developers to build, deploy, run and update containers.

Image is the package containing the required files and containers are the machines that run using those images. There could be one image in your machine but you can run multiple containers from that single image. Those containers will use your host’s resources (CPU, memory, disk) when powered on.