Create wpcarro.dev/goals

Create a simple React app to define my goals. See the goals/README.md for more
context.

website/default.nix

@@ -1,11 +1,13 @@
-{ pkgs, ... }:
+{ pkgs, briefcase, ... }:
 
 pkgs.stdenv.mkDerivation {
   name = "wpcarro.dev";
   src = ./.;
-  buildPhase = ''
+  installPhase = ''
     mkdir -p $out
     cp $src/index.html $out
+
+    mkdir -p $out/goals
+    cp -r ${briefcase.website.goals}/* $out/goals
   '';
-  dontInstall = true;
 }