Easy setup to run docker command without sudo (Linux)

When I run the docker command on Linux without sudo, I get the following permission error:

Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock: Get http://%2Fvar%2Frun%2Fdocker.sock/v1.40/containers/json: dial unix /var/run/docker.sock: connect: permission denied

By default, root execute permission is required, but you can use the following procedure to hit the docker command without sudo.

#Create docker user group
sudo groupadd docker
#Add current user to docker group
sudo usermod -aG docker $USER
#Immediately reflect changes
newgrp docker

Annotation

• The user group should have been created at the time of installation and should not be necessary, but since it was described in the official document, it is also described here.

reference

• Post-installation steps for Linux | Docker Documentation