fix: use static export for both CF Pages and Docker

- Set output: 'export' in next.config.ts (creates /out directory)
- Replaced Node.js standalone Dockerfile with nginx serving static files
- Updated docker-compose.yml for nginx (port 80)
- Both CF Pages and Docker now use the same static build

Dockerfile

@@ -1,15 +1,4 @@
-# Stage 1: Install dependencies
-FROM node:20-alpine AS deps
-WORKDIR /app
-
-# Copy package files
-COPY package.json package-lock.json ./
-
-# Install dependencies
-RUN npm ci --only=production && \
-    npm cache clean --force
-
-# Stage 2: Build the application
+# Stage 1: Build the application
 FROM node:20-alpine AS builder
 WORKDIR /app
 
@@ -19,45 +8,40 @@ ENV NEXT_TELEMETRY_DISABLED=1
 # Copy package files
 COPY package.json package-lock.json ./
 
-# Install all dependencies (including devDependencies)
+# Install dependencies
 RUN npm ci
 
 # Copy source code
 COPY . .
 
-# Build Next.js application
+# Build Next.js application (static export to /app/out)
 RUN npm run build
 
-# Stage 3: Production runtime
-FROM node:20-alpine AS runner
-WORKDIR /app
+# Stage 2: Serve static files with nginx
+FROM nginx:alpine AS runner
 
-# Set environment to production
-ENV NODE_ENV=production
-# Disable Next.js telemetry
-ENV NEXT_TELEMETRY_DISABLED=1
+# Copy custom nginx config for SPA routing
+RUN echo 'server { \
+    listen 80; \
+    listen [::]:80; \
+    root /usr/share/nginx/html; \
+    index index.html; \
+    location / { \
+        try_files $uri $uri/ $uri.html /index.html; \
+    } \
+    location /_next/static/ { \
+        expires 1y; \
+        add_header Cache-Control "public, immutable"; \
+    } \
+    gzip on; \
+    gzip_types text/plain text/css application/json application/javascript text/xml application/xml text/javascript; \
+}' > /etc/nginx/conf.d/default.conf
 
-# Create non-root user for security
-RUN addgroup --system --gid 1001 nodejs && \
-    adduser --system --uid 1001 nextjs
-
-# Copy necessary files from builder
-COPY --from=builder /app/public ./public
-COPY --from=builder /app/.next/standalone ./
-COPY --from=builder /app/.next/static ./.next/static
-
-# Set correct permissions
-RUN chown -R nextjs:nodejs /app
-
-# Switch to non-root user
-USER nextjs
+# Copy static files from builder
+COPY --from=builder /app/out /usr/share/nginx/html
 
 # Expose port
-EXPOSE 3000
+EXPOSE 80
 
-# Set environment variable for port
-ENV PORT=3000
-ENV HOSTNAME="0.0.0.0"
-
-# Start the application
-CMD ["node", "server.js"]
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]