Cloning a repository (let's call it "main repository") in dev container work fine.
Cloning another repository inside the same dev container does not work (permission denied).
In VSCode, "Clone repository in container volume" (from the menu). From there, everything work fine:
Opening a "integrated terminal" (running from inside the dev container), and try to clone another repository inside:
This is strange:
=> Why does the "main" repository work fine (with authorization), while another repository (where the credentials are the same) does not ?
In fact, VSCode containers use "https" to checkout from git.
The solution is to use https://github.com/... to checkout the secondary repository.