release-oci.yaml

name: Release to GHCR

on:
  push:
    branches:
      - main
  workflow_dispatch: {}

concurrency:
  group: ${{ github.workflow }}-${{ github.ref }}
  cancel-in-progress: true

jobs:
  release-helm-chart:
    name: Release Helm Chart
    runs-on: ubuntu-latest
    timeout-minutes: 10
    steps:
      - uses: actions/checkout@c85c95e3d7251135ab7dc9ce3241c5835cc595a9 # v3
        with:
          fetch-depth: 2

      - name: Login to container registry
        run: |
          echo "${{ secrets.GITHUB_TOKEN }}" | docker login ghcr.io -u ${{ github.actor }} --password-stdin

      - name: Pushing Helm Chart
        run: |
          prev_rev=$(git rev-parse HEAD^)
          echo "Identifying changed charts since git rev ${prev_rev}"

          changed_charts=()
          readarray -t changed_charts <<< "$(git diff --find-renames --diff-filter=d --name-only "$prev_rev" -- charts | cut -d '/' -f 2 | uniq)"

          if [[ -n "${changed_charts[*]}" ]]; then
            for chart in "${changed_charts[@]}"; do
              #echo "Updating dependencies for '$chart'..."
              helm dependency update "charts/$chart"
              # create chart package for chart `CHART`
              helm package charts/$chart
              # get packed chart file name
              PKG_NAME=`ls $chart-*.tgz`
              # push chart to registry
              helm push ${PKG_NAME} oci://ghcr.io/${GITHUB_REPOSITORY}
              # remove chart package
              rm ${PKG_NAME}
            done
          else
            echo "No chart changes detected"
          fi