feat: Enable tailscale on physical servers

fix: Fix Nix flake checks

nixos-modules/default.nix

@@ -6,5 +6,6 @@
     ./data-sharing.nix
     ./monitoring
     ./k3s
+    ./tailscale.nix
   ];
 }

nixos-modules/k3s/default.nix

@@ -61,6 +61,7 @@ in
       nfs-utils # Required for Longhorn
     ];
 
+    # TODO!!!!!
     networking = {
       nftables.enable = lib.mkForce false;
       firewall.enable = lib.mkForce false;

nixos-modules/tailscale.nix

@@ -0,0 +1,14 @@
+{ config, ... }: {
+  config = {
+    services.tailscale = {
+      enable = true;
+      authKeyFile = config.sops.secrets."tailscale/authKey".path;
+
+      extraUpFlags = [
+        "--hostname=${config.networking.hostName}"
+      ];
+    };
+
+    sops.secrets."tailscale/authKey" = { };
+  };
+}