1.Components of Docker and its Brief Summary
A docker consists of
Docker client which puts up the request for the client in order to perform a request.
Docker host which contains the docker daemon. The requests which are put up by the client are processed here i.e containers are created and images are pulled from docker registry/hub.
Docker registry is the place where the different apps images are stored. These images are pulled to the host where they are processed by creating a container.