Open external links in a container per Denys H

Features

• provides custom protocol handler to open URLs in containers
• supports both command line and internal invocations
• supports creation of containers on the fly
• supports setting colors and icons when creating new containers
• supports tabs pinning
• supports opening tabs in reader mode
• works well in combination with other extensions

Usage examples
Open https://mozilla.org in a container named MyContainer.

$ firefox 'ext+container:name=MyContainer&url=https://mozilla.org'

Open https://mozilla.org in a container named MyContainer. If the container doesn't exist, create it using an orange coloured fruit icon. Also, pin the tab.

$ firefox 'ext+container:name=MyContainer&color=orange&icon=fruit&url=https://mozilla.org&pinned=true'

Also it will work with the links on the site:

<a href="ext+container:name=MyContainer&url=https://mozilla.org">Mozilla.Org in MyContainer</a>

Launcher script (bash)
Shell launcher provides a shortcut to easily interact with the extension from command line, scripts, OS shortcuts etc.

The latest version of the launcher is available here: https://github.com/honsiorovskyi/open-url-in-container/blob/master/launcher.sh

Source code
https://github.com/honsiorovskyi/open-url-in-container