Best container managing addon I found until now. I love the "default feature". Only drawback, it seems to map whole (sub)domains to containers. I would wish for the possibility to map some pages and their subpages on a domain and/or subdomains to a different container.
An use case example is Wordpress. If making changes to a site it would be nice to have the backend in one container while the live site is in another. But after mapping the backend to "work" container the site also always opens in "work" and vice versa. Of course I can temporally choose another container, but making this permanently changes it for the whole domain and not only the page and its subpages.
An good example how this could work better is "Dark Background and Light Text" (https://addons.mozilla.org/de/firefox/addon/dark-background-light-text)
Anyhow, thanks for this marvelous addon.