Docker
↑ A REST API which specifies interfaces that programs can use to talk to the daemon and instruct it what to do.
1 2 A command line interface (CLI) client (the docker command).
↑ The CLI uses the Docker REST API to control or interact with the Docker daemon through scripting or direct CLI commands.
↑ A Docker registry stores Docker images.
↑ By default, the Docker daemon automatically starts containerd.
↑ Docker Hub is a public registry that anyone can use, and Docker is configured to look for images on Docker Hub by default.
↑ Docker is an open platform for developing, shipping, and running applications.
↑ Docker Trusted Registry (DTR) is the enterprise-grade image storage solution from Docker.