Firefox containers are basically just named cookie sets: they don't have per-container settings, they just let you create containerized tabs that don't share cookies between each other (maybe local and session storage too, idk).

They're useful if you want to make it a bit harder for websites to track you around, or for selectively keeping you logged into a website (alt account usage comes to mind), but your use case seems to be centered around actual profiles.

[–] UNWILLING_PARTICIPANT@sh.itjust.works 2 points 9 months ago (1 children)

Oh this is going to come in handy for testing the web app at work. I've just been using private windows

[–] Sonotsugipaa@lemmy.dbzer0.com 4 points 9 months ago

If you're frequently creating new containers I suggest the Temporary Containers extension, it saves you having to manually clear everything when you're done with a specific session and want to start another