DNS resolution error during windows unbutu20 lts apt, WGet installation

Searched a lot , It's all about DNS Parse error , Follow everyone's method , To modify   /etc/resolv.conf Just the things inside , But I found a problem after the modification , After restart , Check this file and it will be restored to the default again , Can't persist , So at present, we can only encounter DNS Run the code when there is a problem , Go again apt install

sudo rm /etc/resolv.conf
sudo bash -c 'echo "nameserver 8.8.8.8" > /etc/resolv.conf'
sudo bash -c 'echo "[network]" > /etc/wsl.conf'
sudo bash -c 'echo "generateResolvConf = false" >> /etc/wsl.conf'
sudo chattr +i /etc/resolv.conf

wget There may also be this problem , I run the above code , Just install it again