Add Dockerfile and .dockerignore for client application

client/.dockerignore

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+node_modules/
+dist/

client/Dockerfile

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+# Use an official node image as the base image
+FROM node:16-alpine
+
+# Set the working directory
+WORKDIR /app
+
+# Copy package.json and package-lock.json
+COPY package*.json ./
+
+# Install dependencies
+RUN npm install
+
+# Copy the rest of the application code
+COPY . .
+
+# Set environment variable
+ENV VITE_BACKEND_URL=https://devhub-server-original.onrender.com
+
+# Build the application
+RUN npm run build
+
+# Expose the port the app runs on
+EXPOSE 3000
+
+# Start the application
+CMD ["npm", "run", "serve"]

client/vercel.json

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+{
+  "rewrites": [
+    {"source": "/:a*", "destination": "/"}
+  ]
+}