added dockerfile

src/Dockerfile

@@ -0,0 +1,29 @@
+# Use an official Node runtime as the base image
+FROM node:14 as build
+
+# Set the working directory in the container
+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 . .
+
+# Build the app
+RUN npm run build
+
+# Use nginx to serve the static files
+FROM nginx:alpine
+
+# Copy the build output to replace the default nginx contents
+COPY --from=build /app/build /usr/share/nginx/html
+
+# Expose port 80
+EXPOSE 80
+
+# Start nginx
+CMD ["nginx", "-g", "daemon off;"]