What are the components of Docker?

The three main Docker components are:

Docker Client performs Docker build pull and run operations to open up communication with the Docker Host. The Docker command then employs Docker API to call any queries to run.

Docker Host contains Docker daemon, containers, and associated images. The Docker daemon establishes a connection with the Registry. The stored images are the type of metadata dedicated to containerized applications.

Registry is where Docker images are stored. There are two of them, a public registry and a private. Docker Hub and Docker Cloud are two public registries available for use by anyone.

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