Create Dockerfile

Dockerfile

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+FROM node:18-slim
+WORKDIR /app
+
+# Install dependencies first (for build cache efficiency)
+COPY package*.json ./
+# Install all dependencies including dev so Vite is available during build and preview
+RUN npm install
+
+# Copy the rest of the source code
+COPY . .
+
+# Ensure non-root user (UID 1000) can write to the app directory at runtime (HF Spaces runs with uid 1000)
+RUN chown -R 1000:1000 /app
+
+# Switch to the non-root user
+USER 1000
+
+# Default port for Hugging Face Spaces Docker runtime
+ENV PORT 7860
+EXPOSE 7860
+
+# Start the app – this script builds then serves via Vite preview on $PORT
+CMD ["npm", "start"]