adding pipeline and dockerfile

Dockerfile

@@ -0,0 +1,20 @@
+FROM node:14 AS build
+
+WORKDIR /app
+
+COPY package*.json ./
+
+RUN npm install
+
+COPY . .
+
+RUN npm run build
+
+FROM nginx:alpine
+
+COPY --from=build /app/build /usr/share/nginx/html
+
+EXPOSE 80
+
+# Start Nginx server
+CMD ["nginx", "-g", "daemon off;"]