Support for private repositories

[jemag]

Please excuse me if this is not the right place to ask for this @adinhodovic , however after reading your blog post and seeing the code examples in this repo I was wondering:

How do you handle private repositories with the sidecar plugin?

It seems that by default the credentials are not made available to the sidecar, and various people seem to have come up with workarounds. I would be interested to know your take on how to handle these private repositories requiring credentials:
For example, using jb to pull dependencies from private repos