containers: make all variables explicit

Instead of merging the argument set just make all arguments explicit.

nix/os/containers/backup.nix

@@ -1,4 +1,7 @@
-{ config, ... } @ args:
+{ config
+, hostAddress
+, localAddress
+}:
 
 let
   unstablepkgs = import <channels-nixos-unstable> { config = config.nixpkgs.config; };
@@ -63,7 +66,7 @@ let
     };
 
 
-in args // {
+in {
   config = { pkgs, ... }: {
     imports = [
       ../profiles/containers/configuration.nix
@@ -189,4 +192,6 @@ in args // {
   privateNetwork = true;
   forwardPorts = [
   ];
+
+  inherit hostAddress localAddress;
 }