import http.server, os
os.chdir("/spec")
class H(http.server.SimpleHTTPRequestHandler):
    def end_headers(self):
        self.send_header("Access-Control-Allow-Origin", "*")
        self.send_header("Access-Control-Allow-Methods", "GET, OPTIONS")
        super().end_headers()
    def do_OPTIONS(self):
        self.send_response(204); self.end_headers()
http.server.ThreadingHTTPServer(("0.0.0.0", 8080), H).serve_forever()