Improve docs post

src/leiningen/new/cryogen/md/posts/2020-12-03-docs.md

@@ -34,10 +34,12 @@ A new site can be created using the Cryogen template as follows:
 lein new cryogen my-blog
 ```
 
-or, alternatively, using [`clj-new`](https://github.com/seancorfield/clj-new/) (and having defined the `new` profile, as it suggests):
+or, alternatively, using `clj-new as a tool`](https://github.com/seancorfield/clj-new#installation-as-a-tool):
 
 ```
-clojure -X:new create :template cryogen :name me.my-blog
+clojure -Ttools install com.github.seancorfield/clj-new '{:git/tag "v1.2.362"}' :as clj-new # update to latest!
+clojure -Tclj-new create :template cryogen :name myname/myblog :force true
+cd myname/myblog/
 ```
 
 ### Running the Server
@@ -56,6 +58,12 @@ clojure -X:serve # or clojure -X:serve:fast
 
 The server will watch for changes in the `content` and `themes` folders and recompile the content automatically. The `*:fast` variants perform [fast but partial compilation](https://cryogenweb.org/docs/fast-compilation.html) of only the changed page/post.
 
+#### Changing the port
+
+You can either change the hard-coded port in `deps.edn` / `server.clj` or override it by setting the PORT env var.
+
+### Building the static site
+
 You can also generate the content without bringing up a server either via:
 
 ```