added docker file

Author: Rachana-js

Dockerfile

@@ -0,0 +1,22 @@
+# Use Node.js official image
+FROM node:18-alpine
+
+# Set working directory
+WORKDIR /app
+
+# Copy package.json and install dependencies
+COPY package*.json ./
+RUN npm install
+
+# Copy the rest of the app
+COPY . .
+
+# Build the React app
+RUN npm run build
+
+# Use Nginx to serve the build
+FROM nginx:alpine
+COPY --from=0 /app/build /usr/share/nginx/html
+
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]