[bigbubba]

The reason Facebook Container exists is because the UX of the generic version is awful. Trying to created a new container to always open a site with has something like half a dozen steps.

And of course we won't get a dedicated 'Google Container' from Mozilla because despite all their hot talk they know what side their bread is buttered on.

[dyingkneepad]

"ctrl + ." or just click the container button on the top right

Select "always open this site in".

[bigbubba]

You're missing quite a few steps. I just ran through this process to ensure I didn't miss anything:

1) Visit the site.

2) Click the container button or use the shortcut.

3) Click 'Manage Containers'

4) Click 'New Container'

5) Name the container, click 'Ok'

6) Open the multi-account containers panel again.

7) Click 'Always Open This Site in...'

8) Select your new container.

But wait, you're still not done!

9) Open the site again in a new tab.

10) Check the 'Remember my decision for this site' box. (Didn't I already tell it to ALWAYS open the site in that container, in step 7?)

11) Click 'Open in [your container] Container'

That's how you create a new container to always open a site in with the Multi-Account Containers extension.