feat: Add Docker support with production and development configurations for backend and frontend

client/Dockerfile

@@ -0,0 +1,22 @@
+# Production build with Vite preview server
+FROM node:18-alpine
+
+WORKDIR /app
+
+# Copy package files
+COPY package*.json ./
+
+# Install dependencies
+RUN npm ci
+
+# Copy source code
+COPY . .
+
+# Build the app
+RUN npm run build
+
+# Expose port for Vite preview server
+EXPOSE 3000
+
+# Serve built files with Vite preview
+CMD ["npm", "run", "preview", "--", "--host", "0.0.0.0", "--port", "3000"]