add 404 page nginx config

nginx.conf

@@ -0,0 +1,12 @@
+server {
+        listen 80 default_server;
+        listen [::]:80 default_server;
+        root /var/www/html;
+        index index.html index.htm index.php;
+        error_page 404 = /404.html;
+        location ~ \.php$ {
+              fastcgi_pass      127.0.0.1:9000;
+              fastcgi_index     index.php;
+              include           fastcgi.conf;
+        }
+}