buildFHSEnvBubblewrap: bind /etc/dconf (NixOS#369279)

Author: SuperSandro2000

pkgs/build-support/build-fhsenv-bubblewrap/default.nix

@@ -124,6 +124,8 @@ let
         "ssl/certs"
         "ca-certificates"
         "pki"
+        # Custom dconf profiles
+        "dconf"
       ];
     in
     map (path: "/etc/${path}") files;