Feature request: add option for skipping SSL verification when using Git

[alexandreroman]

Describe the problem/challenge you have
vendir has no option for setting GIT_SSL_NO_VERIFY=true, which could be used with Git repos using a self-signed certificate.
This environment variable tells Git not to verify SSL certificates.

Describe the solution you'd like
The current implementation already sets a few environment variables when using Git, such as GIT_LFS_SKIP_SMUDGE=1 to skip downloading lfs files.

I wish there was a way to disable SSL verification when using Git, by adding a flag in the Git configuration.

For example:

git:
      url: https://github.com/cloudfoundry/cf-k8s-networking
      ref: origin/master
      # skip SSL verification
      skipSslVerification: true

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[neil-hickey]

Thanks for submitting this issue @alexandreroman , would you be interesting in making a PR with the change?

[alexandreroman]

I'm not into Go, but I'm happy to help with testing when you get something ready.

[vmunishwar]

Response from @alexandreroman -
The problem is: I ran into this issue with my customer when using kapp-controller (through TAP namespace-provisioner) and a private Git repo with a self-signed certificate. Ultimately we’d need to add a setting in kapp-controller to skip TLS validation for Git repos - maybe using the flag dangerousSkipTLSVerify?

As per above message seems like we need to implement this in kapp-controller.

[alexandreroman]

Correct: from a user perspective, kapp-controller will have to configure vendir to skip TLS verification (this is my use case). Reusing the existing flag dangerousSkipTLSVerify would be great.

[vmunishwar]

@alexandreroman - Here is the PR (#265) for adding option for skipping SSL verification when using Git. I have merged this PR to develop. This feature should be available with the next release of vendir.

[joaopapereira]

Fixed in release v0.36.0