Minor changes to index.php

nginx/default.conf

 server {
 
     listen 80;
-    index index.php index.html;
+    index index.php index.phtml index.html;
     server_name localhost;
     error_log  /var/log/nginx/error.log;
     access_log /var/log/nginx/access.log;
     root /var/www/html/public;
 
-    location ~ \.php$ {
+    location ~ \.(php|phtml)$ {
         try_files $uri =404;
         fastcgi_split_path_info ^(.+\.php)(/.+)$;
         fastcgi_pass php:9000;

site/public/index.php

   ?>
 
 </body>
+</html>