Yes I have followed steps provided here https://docs.docker.com/engine/install/ubuntu/ and https://docs.docker.com/engine/install/linux-postinstall/ and also checked this thread docker.sock permission denied
But still getting the below problem when docker is run without sudo in Ubuntu 18.04
docker run hello-world
docker: Cannot connect to the Docker daemon at unix:///run/user/1000/docker.sock. Is the docker daemon running?.
See 'docker run --help'.
It is rather frustrating as I tried multiple times.