create docker file

Dockerfile

@@ -0,0 +1,9 @@
+#stage 1
+FROM node:latest as node
+WORKDIR /app
+COPY . .
+RUN npm install
+RUN npm run build --prod
+#stage 2
+FROM nginx:alpine
+COPY --from=node /app/dist/demo-app /usr/share/nginx/html