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I'm working on a customized LiveCD and would like to provide Firefox including a few extensions pre-installed. The steps of LiveCD customization are done within a self-written .sh-script.

I found this question where an approach for my requirement is discussed.
Following that approach, what I did then via chroot in path edit/ is:

  1. Download the XPI file I want to have installed.
  2. Unzip it.
  3. Read the extension ID in manifest.json (a string like this 'id': '{idstring}').
  4. Create a folder {idstring} in /usr/share/mozilla/extensions and insert all files retrieved by unzipping the XPI file.

Unfortunately, when I test the generated ISO file and run firefox, the extension is not available and is also not installed on startup of firefox.

How can I add an extension to firefox for the LiveCD via a .sh-script? If there are several approaches, I would prefer if the installation is already finished when running firefox on the LiveCD for the first time.

Thanks for your help!

Edit: While after performing the procedure mentioned above the extensions are available in path edit/usr/share/mozilla/extensions in folder {idstring} and therefore should be included in the created LiveCD, I can't find them when booting from the LiveCD.
What am I missing here?
If you need additional information, just let me know.

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