See also httpd documentation. By default the server root is /var/www and DokuWiki is in /var/www/dokuwiki.

server "default" {
 listen on egress port 443
 root "/dokuwiki"
 directory index doku.php
 
 # Set according to upload_max_filesize and post_max_size in php.ini 
 connection max request body 20971520 
 
 location "*.php" { fastcgi socket "/run/php-fpm.sock" }
 
 # Block access to non-public dirs
 location "/data/*" { block }
 location "/conf/*" { block }
 location "/bin/*" { block }
 location "/inc/*" { block }
 location "/vendor/*" { block }
 
 # URL rewrite rules 
 location match "/media/(.*)" {
 request rewrite "/lib/exe/fetch.php?media=%1"
 }
 
 location match "/detail/(.*)" {
 request rewrite "/lib/exe/detail.php?media=%1"
 }
 
 location match "/export/([^/]+)/(.*)" {
 request rewrite "/doku.php?do=export_%1&id=%2"
 }
 
 location match "/(lib/.*)" {
 request rewrite "/%1"
 }
 
 location match "/([^lib])" {
 request rewrite "/doku.php?id=$DOCUMENT_URI&$QUERY_STRING"
 }
}