I saw several container tabs extensions. Is this the one you use? And if not, which one do you use?
https://addons.mozilla.org/en-US/firefox/addon/container-tab...
I also use Temporary Containers [2], Facebook Container by Mozilla [3], and Google Container [3]. There are also container extensions for Twitter, YouTube, etc.
[1]: https://addons.mozilla.org/firefox/addon/multi-account-conta...
[2]: https://addons.mozilla.org/firefox/addon/temporary-container...
[3]: https://addons.mozilla.org/firefox/addon/facebook-container/
[4]: https://addons.mozilla.org/firefox/addon/google-container/