A GitHub action for single chart or multi-chart repositories that performs push and github releases creation for the hosted charts.

1. A GitHub repo containing a directory with your Helm charts (one of the following folders named /charts, /chart or helm, if you want to maintain your charts in a different directory, you must include a charts_dir input in the workflow).
2. Create a workflow .yml file in your .github/workflows directory. An example workflow is available below. For more information, reference the GitHub Help Documentation for Creating a workflow file

• version: The helm version to use (default: v3.13.2)
• charts_dir: The charts directory
• oci_registry: The OCI registry host
• oci_username: The username used to login to the OCI registry
• oci_password: The OCI user's password
• github-token: Github Actions token must be provided to manage release creation and update.
• tag_name_pattern: Specifies GitHub repository release naming pattern (ex. '{chartName}-chart'). For instance you chart is named as app, but you want it to be released as app-chart-x.y.z, use tag_name_pattern {chartName}-chart.
• skip_helm_install: Skip helm installation (default: false)
• skip_dependencies: Skip dependencies update from "Chart.yaml" to dir "charts/" before packaging (default: false)
• skip_existing: Skip the chart push if the GithHub release exists
• mark_as_latest: When you set this to false, it will mark the created GitHub release not as 'latest'.

• released_charts: A comma-separated list of charts that were released on this run. Will be an empty string if no updates were detected, will be unset if --skip_packaging is used: in the latter case your custom packaging step is responsible for setting its own outputs if you need them.
• chart_version: The version of the most recently generated charts; will be set even if no charts have been updated since the last run.

Create a workflow (eg: .github/workflows/release.yml):

name: Release Charts

on:
  push:
    branches:
      - main

jobs:
  release:
    runs-on: ubuntu-latest
    permissions:
      contents: write
      packages: write
    steps:
      - name: Checkout
        uses: actions/checkout@v3
        with:
          fetch-depth: 0

      - name: Configure Git
        run: |
          git config user.name "$GITHUB_ACTOR"
          git config user.email "[email protected]"

      - name: Run chart-releaser
        uses: bitdeps/[email protected]
        with:
            oci_registry: ghcr.io/username
            oci_username: username
            oci_password: ${{ secrets.GITHUB_TOKEN }}
            github_token: ${{ secrets.GITHUB_TOKEN }}

This uses under the hood uses Helm and gh cli (which is available to actions). Helm is used to login and push charts into an OCI registry, while gh cli is used to create and update the repository releases.

It does this – during every push to main – by checking each chart in your project, and whenever there's a new chart version, creates a corresponding GitHub release named for the chart version, adds Helm chart artifacts to the release, and pushes the chart into the given OCI registry.