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.dockerignore

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+.git
+**/node_modules
+**/dist
+**/.env
+.DS_Store

Dockerfile

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+# ---------- Build stage ----------
+FROM node:20-slim AS builder
+WORKDIR /app
+
+# Copy manifests first for better caching
+COPY frontend/package*.json frontend/
+COPY backend/package*.json backend/
+
+# Install deps & build frontend
+RUN npm ci --prefix frontend && npm run build --prefix frontend
+
+# Install backend (prod deps only)
+RUN npm ci --omit=dev --prefix backend
+
+# Copy sources
+COPY frontend frontend
+COPY backend backend
+
+# ---------- Runtime stage ----------
+FROM node:20-slim
+WORKDIR /app
+
+# Copy built artifacts
+COPY --from=builder /app/backend /app/backend
+COPY --from=builder /app/frontend/dist /app/frontend/dist
+
+# Hugging Face Spaces exposes $PORT (usually 7860). Do NOT hardcode a port.
+ENV NODE_ENV=production
+EXPOSE 7860
+
+# Start Express (serves /api + the React build)
+CMD ["node", "backend/src/server.js"]

space.yaml

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+title: Inventory Pro (Monolith)
+emoji: 📦
+sdk: docker
+app_port: 7860
+pinned: false