How does the 'docker run' command interact with the Docker Daemon to start a container?

The docker run command interacts with the Docker Daemon as follows:

1. When the user enters docker run, the Docker CLI formulates a request with container startup parameters.
2. This request is sent via REST API to the Docker Daemon, which runs in the background and manages containers.
3. The Docker Daemon processes the request: checks for the image, downloads it if necessary, creates the container, and configures the network and filesystem.
4. After preparation, the Daemon starts the container and returns control to the CLI.

Thus, docker run is a client command that sends instructions to the Docker Daemon, which performs all operations related to creating and starting the container.