Test staging nginx config

Dockerfile

@@ -1,2 +1,5 @@
 FROM nginx
 COPY ./out /usr/share/nginx/html
+
+COPY staging-nginx.conf /etc/nginx/conf.d
+RUN rm /etc/nginx/conf.d/default.conf

staging-ngix.conf

@@ -0,0 +1,9 @@
+server {
+    listen 80;
+    location / {
+      root   /usr/share/nginx/html;
+      index  index.html index.htm;
+      try_files $uri $uri/ /index.html;
+    } 
+    error_page 404 /index.html;
+  }