nginx installation guide - Official

apt install curl gnupg2 ca-certificates lsb-release ubuntu-keyring

curl https://nginx.org/keys/nginx_signing.key | gpg --dearmor \
| tee /usr/share/keyrings/nginx-archive-keyring.gpg >/dev/null

echo "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] \
http://nginx.org/packages/ubuntu `lsb_release -cs` nginx" \
| tee /etc/apt/sources.list.d/nginx.list

echo "deb [signed-by=/usr/share/keyrings/nginx-archive-keyring.gpg] \
http://nginx.org/packages/mainline/ubuntu `lsb_release -cs` nginx" \
| tee /etc/apt/sources.list.d/nginx.list

echo -e "Package: *\nPin: origin nginx.org\nPin: release o=nginx\nPin-Priority: 900\n" \
| tee /etc/apt/preferences.d/99nginx

apt update
apt search nginx
apt install nginx