Add secrets and cleanup

modules/cloudflare-ddns/ddns.sh

@@ -1,6 +1,6 @@
 #!@bash@/bin/bash
 
-source /run/secrets/main.env
+source /run/secrets.env
 
 cache=/var/lib/cloudflare-ddns/old_ip
 IP=$(@curl@/bin/curl -s 'https://api.ipify.org')

modules/cloudflare-ddns/default.nix

@@ -1,4 +1,4 @@
-{ config, pkgs, ... }:
+{ pkgs, ... }:
 
 let
   script = pkgs.replaceVars ./ddns.sh {
@@ -8,7 +8,6 @@ let
   };
 
   cloudflare-ddns = pkgs.writeShellScriptBin "cloudflare-ddns" (builtins.readFile script);
-
 in
 {
   environment.systemPackages = [ cloudflare-ddns ];