fix: missing GPG key

Author: akafeng

Dockerfile

@@ -1,7 +1,7 @@
 FROM debian:bookworm-slim AS builder
 
 ARG NGINX_VERSION="1.25.4"
-ARG NGINX_GPG_KEY="13C82A63B603576156E30A4EA0EA981B66B0D967"
+ARG NGINX_GPG_KEY="D6786CE303D9A9022998DC6CC8464D549AF75C0A 13C82A63B603576156E30A4EA0EA981B66B0D967"
 ARG NGINX_URL="https://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz"
 ARG NGINX_PGP_URL="https://nginx.org/download/nginx-${NGINX_VERSION}.tar.gz.asc"