Update Dockerfile

Dockerfile

@@ -1,13 +1,41 @@
-FROM node:20-slim
+FROM node:18-alpine AS base
 
+# 1. Install Dependencies
+FROM base AS deps
+RUN apk add --no-cache libc6-compat
 WORKDIR /app
-
-COPY package*.json ./
+COPY package.json ./
 RUN npm install
+
+# 2. Build the System
+FROM base AS builder
+WORKDIR /app
+COPY --from=deps /app/node_modules ./node_modules
 COPY . .
 
+# --- CRITICAL FIX ---
+# Remove the legacy Python 'app' folder so Next.js sees 'src/app'
+RUN rm -rf app
+# --------------------
+
+ENV NEXT_TELEMETRY_DISABLED 1
 RUN npm run build
 
-EXPOSE 3000
+# 3. Production Runner
+FROM base AS runner
+WORKDIR /app
+ENV NODE_ENV production
+ENV NEXT_TELEMETRY_DISABLED 1
+
+RUN addgroup --system --gid 1001 nodejs
+RUN adduser --system --uid 1001 nextjs
 
-CMD ["npm", "start"]
+# Copy assets
+COPY --from=builder /app/public ./public
+COPY --from=builder --chown=nextjs:nodejs /app/.next/standalone ./
+COPY --from=builder --chown=nextjs:nodejs /app/.next/static ./.next/static
+
+USER nextjs
+EXPOSE 3000
+ENV PORT 3000
+CMD ["node", "server.js"]