Authentication for sources in azd template source

[lechnerc77]

Discussed in #2960

^{Originally posted by lechnerc77 November 12, 2023}
We can change the list of available template sources via azd template source add. Assuming I want to add my custom source I can define a JSON and reference it via e.g.:

azd template source add my-source --type url --location https://raw.githubusercontent.com/lechnerc77/azd-festive-tech-calendar-2023/main/custom_template/dapr_template.json

How can I use this command and access private GitHub repositories that require authentication?

Following up this discussion and the answer by @wbreza I open this issue as a feature request for enhancing azd template sources for defining the sources behind endpoints that need authentication like private GitHub repositories

Scenario: company maintains their own curated list of sources for azd. The list of the sources as well as the sources are available in private repositories only.

[vhvb1989]

We should be able to use gh cli within azd to download the file.

Same way we do for pipeline config, if the gh cli is not logged in, azd runs the login flow. Once logged in, we can use the github api to download the file.
See: https://stackoverflow.com/questions/18126559/how-can-i-download-a-single-raw-file-from-a-private-github-repo-using-the-comman#:~:text=A%20simpler%20solution%20is%20to%20use%20Official%20GitHub,to%20download.%20And%20call%20gh%20to%20download%20it%3A