trying https://addons.mozilla.org/firefox/downloads/file/5168122/multi_account_containers-8.4.0.xpi
  % Total    % Received % Xferd  Average Speed  Time    Time    Time   Current
                                 Dload  Upload  Total   Spent   Left   Speed

  0      0   0      0   0      0      0      0                              0
100 924.9k 100 924.9k   0      0  3.79M      0                              0
100 924.9k 100 924.9k   0      0  3.79M      0                              0
100 924.9k 100 924.9k   0      0  3.79M      0                              0