Make sure the Docker daemon is running. It starts automatically when Docker Desktop is opened. There should be a Docker icon in the system tray. Click it to see details and Docker status.# Reset Docker Desktop to default settings and clear cache docker desktop reset # Restart Docker Desktop service sudo service docker restart # If the above commands didn't work, try removing the Docker Desktop and reinstalling it # Uninstall Docker Desktop sudo apt-get purge docker-ce docker-ce-cli containerd.io sudo rm -rf /var/lib/docker # Reinstall Docker Desktop curl -fsSL https://get.docker.com -o get-docker.sh sudo sh get-docker.sh # Start Docker Desktop sudo service docker start