This is the first time I have installed docker on my laptop which uses windows 10. I installed ubuntu on my computer and installed docker for the for the first time. Here is the link for the instructions I followed.
When I tried to finally run a program I got this error.
root@jeff-HP:~# sudo docker run hello-world
docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?.