Add netlify to shell

.drone.yml

@@ -17,7 +17,7 @@ steps:
       NETLIFY_AUTH_TOKEN:
         from_secret: netlify_auth_token
     commands:
-      - nix-shell -I nixpkgs=./nixpkgs.nix -p netlify-cli --run "netlify deploy --prod -d $(readlink -f result)"
+      - nix-shell --run "netlify deploy --prod -d $(readlink -f result)"
 
 node:
   nix: 1

default.nix

@@ -36,6 +36,7 @@ pkgs.stdenv.mkDerivation {
   name = "presis";
 
   nativeBuildInputs = [
+    pkgs.netlify-cli
     python
     texlive
   ];