jenkins Got permission denied while trying to connect to the Docker daemon socket code example

Example 1: Got permission denied while trying to connect to the Docker daemon socket

sudo chmod 666 /var/run/docker.sock

Example 2: 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 3: Server: ERROR: Got permission denied while trying to connect to the Docker daemon socket

sudo newgroup docker
sudo chmod 666 /var/run/docker.sock
sudo usermod -aG docker ${USER}