feat(docker): build and serve with Node and npm instead of Nginx

Dockerfile

@@ -1,35 +1,27 @@
-# Stage 1: Build static site with Node
-FROM node:22-alpine AS builder
+FROM node:22-alpine
 
 WORKDIR /app
 
-# Dynamic build arguments for domain & full URL (required, no fallback)
+# Dynamic build arguments & environment variables
 ARG SITE_DOMAIN
 ARG SITE_URL
 ENV SITE_DOMAIN=$SITE_DOMAIN
 ENV SITE_URL=$SITE_URL
+ENV PORT=8080
+ENV NODE_ENV=production
 
-# Copy dependency definitions and install
+# Install dependencies
 COPY package*.json ./
 RUN npm ci
 
-# Copy source files and compile static output via Eleventy
+# Copy application source files
 COPY . .
+
+# Build static production assets
 RUN npm run build
 
-# Stage 2: Serve static output via lightweight Alpine Nginx
-FROM nginx:1.25-alpine
+# Expose web server port
+EXPOSE 8080
 
-# Remove default Nginx configuration
-RUN rm /etc/nginx/conf.d/default.conf
-
-# Copy custom Nginx security & clean-URL configuration
-COPY nginx.conf /etc/nginx/conf.d/default.conf
-
-# Copy compiled static website files from builder stage
-COPY --from=builder /app/_site /usr/share/nginx/html
-
-# Expose HTTP port
-EXPOSE 80
-
-CMD ["nginx", "-g", "daemon off;"]
+# Serve site with npm
+CMD ["npm", "start"]