Always In Container от 田生

With this extension installed. Every time you try to open a page out of a container, the extension will ask you to choose a container. It would be helpful if you want every page contained.

Notice

This extension is targeted to be simple. No feature requests would be accepted.

Credit

This extension used some source codes from following open source projects:

• Multi-Account Containers
• Facebook Container

which were created and developed by Mozilla and its contributors.

Translation:

• Polish (by ikurek)