How to fix docker Got permission denied issue

I have ubuntu os with docker installed.

If I run

sudo docker run hello-world

Everything is fine, however I'd like to hide the sudo command to make it shorter.
If I type the command without using sudo like below, it fails.

docker run hello-world

Obviously, I get an error stating I don't have privileges

docker: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Post http://%2Fvar%2Frun%2Fdocker.sock/v1.35/containers/create: dial unix /var/run/docker.sock: connect: permission denied. See 'docker run --help'.

Same happens with this command