Hi everyone , i got the fix for all issues related to docker not pulling img and timeout . Just do these steps :
sudo rm /etc/resolv.conf
echo -e “nameserver 8.8.8.8\nnameserver 1.1.1.1” | sudo tee /etc/resolv.conf
sudo systemctl restart docker
After running those 3 commands docker will start working fine and the dns resolve issue will gone. Try pulling an image and see ! 