Disabling GIT_TERMINAL_PROMPT is insufficient in some cases

[benmss]

During analysis, Macaron's intent is to disable all UI prompts with regards to GitHub logins. For this purpose, the environment variable GIT_TERMINAL_PROMPT is set to False (see: Git Docs). However, in some cases that environment variable is insufficient. As also seen in the Git config docs (link), the environment variables GIT_ASKPASS and SSH_ASKPASS can also cause a prompt to appear, as can the related config value core.askPass.

As the current Macaron Docker image does not suffer from this problem, for now it is only a concern for users trying to run Macaron outside of that environment.

[jsoref]

Technically those are Git docs, not GitHub docs (signed, a contributor to both)