This worked for me (Ubuntu 22.04 Server)
sudo su -
curl -s https://nginx.org/keys/nginx_signing.key | gpg --dearmor > /usr/share/keyrings/nginx-keyring.gpg
This worked for me (Ubuntu 22.04 Server)
sudo su -
curl -s https://nginx.org/keys/nginx_signing.key | gpg --dearmor > /usr/share/keyrings/nginx-keyring.gpg