chore(docker): update nginx base image to 1.27.4-alpine

Replace the nginx base image with amd64/nginx:1.27.4-alpine to 
ensure compatibility and take advantage of the latest features 
and security updates. Adjust the image reference in both build 
and runtime stages of the Dockerfile.

Dockerfile

@@ -1,4 +1,4 @@
-FROM nginx:alpine@sha256:4ff102c5d78d254a6f0da062b3cf39eaf07f01eec0927fd21e219d0af8bc0591 as build
+FROM amd64/nginx:1.27.4-alpine@sha256:6b48d2402696594180cf34025923d21e5da060f8f19dac74097d3683ebc86207 as build
 
 RUN apk add --update \
     wget
@@ -13,7 +13,7 @@ COPY ./ /site
 WORKDIR /site
 RUN hugo
 
-FROM nginx:alpine@sha256:4ff102c5d78d254a6f0da062b3cf39eaf07f01eec0927fd21e219d0af8bc0591
+FROM amd64/nginx:1.27.4-alpine@sha256:6b48d2402696594180cf34025923d21e5da060f8f19dac74097d3683ebc86207
 ADD default.conf /etc/nginx/conf.d/default.conf
 COPY --from=build /site/public /usr/share/nginx/html