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web/Dockerfile

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+# Frontend Dockerfile - Vite React App
+FROM node:20-alpine
+
+WORKDIR /app
+
+# Copy package files first (for better caching when only code changes)
+COPY package*.json ./
+
+# Install dependencies to a cache location (will be copied to volume on start)
+RUN npm ci && cp -r node_modules /node_modules_cache
+
+# Copy entrypoint script
+COPY docker-entrypoint.sh /usr/local/bin/
+RUN chmod +x /usr/local/bin/docker-entrypoint.sh
+
+# Copy source code
+COPY . .
+
+# Expose Vite dev server port
+EXPOSE 5173
+
+# Use entrypoint to initialize node_modules volume if empty
+ENTRYPOINT ["docker-entrypoint.sh"]
+
+# Run Vite dev server (accessible from outside container)
+CMD ["npm", "run", "dev", "--", "--host", "0.0.0.0"]