add dockerfile & nginx.conf

dockerfile

@@ -0,0 +1,12 @@
+FROM node:alpine as build
+WORKDIR /usr/local/app
+COPY ./ /usr/local/app/
+RUN npm install --force
+
+RUN npm run build
+
+FROM nginx:latest
+COPY nginx.conf /etc/nginx/conf.d/default.conf
+COPY --from=build /usr/local/app/build /usr/share/nginx/html
+EXPOSE 80
+CMD ["nginx", "-g", "daemon off;"]

nginx.conf

@@ -0,0 +1,11 @@
+server {
+    listen       80;
+    listen  [::]:80;
+    server_name  localhost;
+
+    location / {
+        root   /usr/share/nginx/html;
+        index  index.html index.htm;
+        try_files $uri $uri/ /index.html;
+    }
+}