since we are chrooting nginx by default let's set a sane default docroot

src/etc/nginx/nginx.conf

@@ -41,7 +41,7 @@ http {
         #access_log  logs/host.access.log  main;
 
         location / {
-            root   html;
+            root   /htdocs;
             index  index.html index.htm;
         }
 
@@ -87,7 +87,7 @@ http {
     #    server_name  somename  alias  another.alias;
 
     #    location / {
-    #        root   html;
+    #        root   /htdocs;
     #        index  index.html index.htm;
     #    }
     #}
@@ -110,7 +110,7 @@ http {
     #    ssl_prefer_server_ciphers   on;
 
     #    location / {
-    #        root   html;
+    #        root   /htdocs;
     #        index  index.html index.htm;
     #    }
     #}