Hosting helm charts in github pages

[aramase]

• Hosting in github pages will give us the flexibility to publish charts from release branches
• Automate the packaging and publish of helm charts using github actions.

Things to do:

• Create gh-pages branch with the current charts dir and updated index
• Add the github actions to publish helm charts (ci: add workflow for publishing helm charts #693)
• Update promote-staging-manifest target to remove helm package command (ci: add workflow for publishing helm charts #693)

[aramase]

Tried this out on my fork and it works well!

1. Create the gh-pages branch with existing charts directory

   1. Create the gh-pages orphan branch

    git checkout --orphan gh-pages
    cp -r charts/ /tmp/charts
    git rm -rf .
    cp -r /tmp/charts .
    rm -rf charts/secrets-store-csi-driver

   2. Update the helm index with the new github pages url

   helm repo index charts/ --url https://aramase.github.io/secrets-store-csi-driver/charts

   3. Push changes to the branch

    git push origin gh-pages

   With this push , all the existing helm releases will now be available on https://aramase.github.io/secrets-store-csi-driver/charts. To confirm, check https://aramase.github.io/secrets-store-csi-driver/charts/index.yaml.

2. Add a workflow for the github action: https://github.com/stefanprodan/helm-gh-pages. This will publish new helm charts to gh-pages when the version is bumped: https://github.com/aramase/secrets-store-csi-driver/tree/chart-workflow

Sample actions run: https://github.com/aramase/secrets-store-csi-driver/actions/runs/1140851369

[aramase]

/assign