fix: remove standalone output, run next start in Docker

Dockerfile

@@ -1,6 +1,5 @@
 FROM node:22-alpine AS builder
 WORKDIR /app
-# Install ALL deps (including devDeps like tailwindcss, typescript)
 ENV NODE_ENV=development
 COPY package*.json ./
 RUN npm ci
@@ -12,9 +11,12 @@ FROM node:22-alpine AS runner
 WORKDIR /app
 ENV NODE_ENV=production
 ENV NEXT_TELEMETRY_DISABLED=1
-COPY --from=builder /app/.next/standalone ./
-COPY --from=builder /app/.next/static ./.next/static
+
+COPY --from=builder /app/package*.json ./
+COPY --from=builder /app/.next ./.next
 COPY --from=builder /app/public ./public
+COPY --from=builder /app/node_modules ./node_modules
+
 EXPOSE 3000
 ENV PORT=3000
-CMD ["node", "server.js"]
+CMD ["node_modules/.bin/next", "start"]