Added socrates, added multiple deploy keys

lib/fudo/sites.nix

@@ -81,8 +81,8 @@ let
         example = "America/Winnipeg";
       };
 
-      deploy-pubkey = mkOption {
-        type = nullOr str;
+      deploy-pubkeys = mkOption {
+        type = nullOr (listOf str);
         description = "SSH pubkey of site deploy key. Used by dropbear daemon.";
         default = null;
       };
@@ -197,7 +197,7 @@ in {
   config = {
     users.users = {
       root.openssh.authorizedKeys.keys =
-        mkIf (site-cfg.deploy-pubkey != null) [ site-cfg.deploy-pubkey ];
+        mkIf (site-cfg.deploy-pubkeys != null) site-cfg.deploy-pubkeys;
 
       ${site-cfg.build-user} = mkIf
         (any (build-host: build-host == config.instance.hostname)