let's try CI images again

pkgs/default.nix

@@ -7,5 +7,7 @@
     nativeBuildInputs = [ pkgs.jujutsu ];
     doCheck = false;
   };
+
+  nix-with-node = import ./images/nix-with-node.nix { inherit pkgs; };
 }
 // import ./nvim { inherit inputs pkgs; }

pkgs/images/nix-with-node.nix

@@ -0,0 +1,10 @@
+{
+  pkgs,
+}:
+(pkgs.docker-nixpkgs.nix.override {
+  nix = pkgs.nixVersions.latest;
+  extraContents = with pkgs; [
+    attic-client
+    nodejs
+  ];
+})