You can clone with
;; Each library function is prefixed by the module it came from.
(define-values (dispatch blog-url)
;; dispatch-rules patterns cover the entire URL, not just the prefix,
;; so your serve-static only matches "/" not anything with that as a
;; prefix. Also, (next-dispatcher) is the default 'else' rule, so it's
;; not necessary.
(define (go req)
`(html (body (p "Dynamically")))))
;; No real comments here :P
(define-runtime-path here ".")
;; (current-directory) is the directory that you start the server
;; from, not the directory where the server's source file is
;; located. The best way to get that is with define-runtime-path
#:extra-files-paths (list (build-path here "htdocs"))
;; #:launch-browser? #t is not necessary because its the default.
;; #:servlet-regexp #rx"" is the key because it means that the server
;; covers all URLs, not just the servlet's path.