adding nginx conf for react containerized app

Author: folken718

nginx/nginx.conf

@@ -0,0 +1,18 @@
+server {
+
+  listen 3000;
+  add_header Content-Security-Policy "frame-ancestors 'self' *"; #It is needed to use iframes...
+
+  location / {
+    root   /usr/share/nginx/html;
+    index  index.html index.htm;
+    try_files $uri $uri/ /index.html;
+  }
+
+  error_page   500 502 503 504  /50x.html;
+
+  location = /50x.html {
+    root   /usr/share/nginx/html;
+  }
+
+}