Create Dockerfile

Dockerfile

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+FROM node:20-alpine
+
+WORKDIR /app
+
+# Copy package files first → better caching
+COPY package*.json ./
+RUN npm ci
+
+# Copy everything else
+COPY . .
+
+# Build
+RUN npm run build
+
+# Serve with a tiny static server
+RUN npm install -g serve
+
+EXPOSE 7860
+
+CMD ["serve", "-s", "dist", "-l", "7860"]