e11sync/pkgs/e11sync-caddyfile.nix

{
  writeTextFile,
  e11sync-static,
  backendPort ? 8002,
}:
writeTextFile {
  name = "e11sync-caddyfile";
  text = ''
    header /static/* Cache-Control "public, max-age=31536000, immutable"

    route /static/* {
      uri strip_prefix /static
      file_server * {
        root ${e11sync-static}
        precompressed br gzip
      }
    }

    reverse_proxy http://127.0.0.1:${toString backendPort}
  '';
}