redirect to sign_up link if user 's email on invitation as no account on the platform

app/controllers/users/dossiers/invites_controller.rb

@@ -1,4 +1,12 @@
 class Users::Dossiers::InvitesController < UsersController
+
+  def authenticate_user!
+    session["user_return_to"] = request.fullpath
+    return redirect_to new_user_registration_path(user_email: params[:email]) if !params[:email].blank? && User.find_by_email(params[:email]).nil?
+
+    super
+  end
+
   def show
     @facade = InviteDossierFacades.new params[:id], current_user.email