Fail to publish charts with dependencies stored on the same repository (when private)

[aatzer]

Hello,

I use helm-gh-pages to store my Helm charts in a private Github repository. I discovered that when one tries to publish a chart that depends on a subchart present on the same private repository, the action fails with a 404 error.

In particular, I've developed chartB and published it successfully via helm-gh-pages on my private repo. I've also developed an umbrella chart (called chartA) that depends on chartB. During publishing of chartA, helm-gh-pages fails with the following error:

Found chart directory charts/chartB
Found chart directory charts/chartA
Getting updates for unmanaged Helm repositories...
Error: no cached repository for helm-manager-zzzzzzzzzzzzzzzzzzzzzz found. (try 'helm repo update'): open /github/home/.cache/helm/repository/helm-manager-zzzzzzzzzzzzzzzzzzzzzz-index.yaml: no such file or directory
...Unable to get an update from the "https://raw.githubusercontent.com/my/helm-charts-repository/gh-pages" chart repository:
	failed to fetch https://raw.githubusercontent.com/my/helm-charts-repository/gh-pages : 404 Not Found

(URLs have been anonymised)

The root-cause of this is that helm doesn't have the Github private repository configured using helm repo add. A workaround is adding the repo prior to fetching dependencies. For example.

helm repo add ${REPOSITORY} ${CHARTS_URL} --username ${GITHUB_TOKEN} --password ${GITHUB_TOKEN}

Thus, any charts that exist on the Github private repository would be accessible, if used by another chart. I understand that this functionality isn't always desirable. But it can easily toggled-on, when needed.