Fix CORS for htmx

README.md

@@ -6,3 +6,9 @@ Details at [the blog post](http://ralsina.me/weblog/posts/the-cheapest-server.ht
 
 When adding a new hostname, remember to create a cert for it using
 `flyctl certs create hostname`
+
+Every 90 days the tailscale auth key will expire and you need to set a new one as
+a secret.
+
+* Create the new one at https://login.tailscale.com/admin/settings/keys
+* Configure it using flyctl secrets set TAILSCALE_AUTHKEY={{PASTEKEYHERE}}