Create Dockerfile

Dockerfile

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+# Hugging Face Spaces: Node + TypeScript + Express
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Prevent npm from funding prompts etc.
+ENV npm_config_fund=false
+ENV npm_config_audit=false
+
+# Install deps
+COPY package.json package-lock.json* ./
+RUN npm ci
+
+# Copy source and build
+COPY tsconfig.json ./
+COPY src ./src
+RUN npm run build
+
+# HF Spaces expects the app to listen on $PORT (default 7860)
+ENV PORT=7860
+EXPOSE 7860
+
+CMD ["npm", "start"]