Put js build through phoenix

Signed-off-by: Thomas Citharel <tcit@tcit.fr>

lib/eventos_web/controllers/page_controller.ex

@@ -7,6 +7,8 @@ defmodule EventosWeb.PageController do
   plug(:put_layout, false)
 
   def index(conn, _params) do
-    render(conn, "index.html")
+    conn
+      |> put_resp_content_type("text/html")
+      |> send_file(200, "priv/static/index.html")
   end
 end