Add error_page.html for 404 errors

astro/nginx.conf

@@ -19,10 +19,17 @@ http {
             try_files $uri $uri/ =404;
         }
 
+        location /error_page.html {
+            internal;
+        }
+
         location ~* \.(jpg|jpeg|png|gif|ico|css|js|htm|html)$ {
+            root /usr/share/nginx/html;
             expires 30d;  
             add_header Pragma public;
             add_header Cache-Control "public";
         }
+
+        error_page 404 /error_page.html;
     }
 }