permission denied in docker build code example

Example 1: Got permission denied while trying to connect to the Docker daemon socket at unix:///var/run/docker.sock

sudo chmod 666 /var/run/docker.sock

Example 2: containers/create: dial unix /var/run/docker.sock: connect: permission denied

sudo setfacl --modify user:<user name or ID>:rw /var/run/docker.sock