Use overlay

Signed-off-by: Nikolaos Karaolidis <nick@karaolidis.com>

packages/docker/littlelink-server/default.nix

@@ -1,19 +1,11 @@
-{
-  pkgs,
-  inputs,
-  system,
-  ...
-}:
-let
-  selfPkgs = inputs.self.packages.${system};
-in
+{ pkgs, ... }:
 pkgs.dockerTools.buildImage {
   name = "littlelink-server";
   fromImage = import ../base { inherit pkgs; };
 
   copyToRoot = pkgs.buildEnv {
     name = "root";
-    paths = with selfPkgs; [ littlelink-server ];
+    paths = with pkgs; [ littlelink-server ];
     pathsToLink = [ "/bin" ];
   };