Use serve instead of astro preview (fix Vite allowedHosts bug)

Dockerfile

@@ -4,12 +4,11 @@ COPY package*.json ./
 RUN npm install
 COPY . .
 RUN npm run build
+
 FROM node:20-alpine
 WORKDIR /app
-COPY package*.json ./
-RUN npm install --omit=dev
 COPY --from=builder /app/dist ./dist
-RUN apk add --no-cache sqlite-libs
+RUN npm install -g serve
 EXPOSE 80
-ENV NODE_ENV=production HOST=0.0.0.0 PORT=80
-CMD ["npx", "astro", "preview", "--host", "0.0.0.0", "--port", "80"]
+ENV NODE_ENV=production
+CMD ["serve", "-s", "dist", "-l", "80", "--listen-addr", "0.0.0.0"]