add /wiki as location

nginx.conf

 server_tokens off;
 server {
-    listen       8080;
-    server_name  localhost;
-    location / {
-        root   /usr/share/nginx/html;
-        index  index.html index.htm;
+    listen 8080;
+    server_name localhost;
+    location /wiki {
+        root /usr/share/nginx/html;
+        index index.html index.htm;
         try_files $uri /index.html;
     }
+
+    error_page 500 502 503 504 /50x.html;
+    location = /50x.html {
+        root /usr/share/nginx/html;
+    }
+
 }
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