while installing it i am getting this, gaurav@LAPTOP-4KT5PNO7:~$ sudo service docker restart Starting Docker: docker [ OK ] gaurav@LAPTOP-4KT5PNO7:~$ sudo docker run hello-world docker: Cannot connect to the Docker daemon at unix:///var/run/docker.sock. Is the docker daemon running?. See 'docker run --help'. can you help me?

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