Install Docker by following the instructions on the Docker website: https://docs.docker.com/engine/install/ Once Docker is installed, open a terminal window. On Windows, this can be done by pressing the Windows key and typing "cmd" in the search bar. On Mac, you can find the Terminal application in the Utilities folder in the Applications folder. To run the Docker daemon and start the Docker engine, enter the command dockerd in the terminal. To verify that the Docker engine is running, enter the command docker ps. This should display a list of running Docker containers. If the Docker engine is not running, you may need to start it manually or check the Docker logs for any errors. You can now use Docker commands in the terminal to manage Docker containers and images. For example, to list all available Docker images, enter the command docker images.