Container Images

With container images, we confine the application code, its runtime, and all of its dependencies in a pre-defined format. 

With container runtimes like runC, containerd, or rkt we can use those pre-packaged images to create one or more containers. 

A fault-tolerant and scalable solution can be achieved by creating a single controller/management unit, after connecting multiple nodes together. This controller/management unit is generally referred to as a container orchestrator.