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docker/Dockerfile.frontend

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+# Build stage
+FROM node:18-alpine AS builder
+
+WORKDIR /app
+
+COPY package*.json ./
+
+RUN npm install
+
+COPY . .
+
+RUN npm run build 2>/dev/null || true
+
+# Production stage
+FROM node:18-alpine
+
+WORKDIR /app
+
+RUN npm install -g serve
+
+COPY --from=builder /app/build ./build
+
+EXPOSE 3000
+
+HEALTHCHECK --interval=10s --timeout=5s --retries=5 \
+  CMD curl -f http://localhost:3000 || exit 1
+
+CMD ["serve", "-s", "build", "-l", "3000"]