Push to ghcr only when the chart has changes (#400)

Signed-off-by: Jongwoo Han <[email protected]>

.github/workflows/release.yml

@@ -35,18 +35,21 @@ jobs:
           helm repo add mongodb https://raw.githubusercontent.com/bitnami/charts/archive-full-index/bitnami
 
       - name: Run chart-releaser
+        id: chart-releaser
         uses: helm/[email protected]
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
 
       - name: Login to GHCR
+        if: steps.chart-releaser.outputs.changed_charts
         uses: docker/login-action@v3
         with:
           registry: ghcr.io
           username: ${{ github.actor }}
           password: ${{ secrets.GITHUB_TOKEN }}
 
       - name: Push Charts to GHCR
+        if: steps.chart-releaser.outputs.changed_charts
         run: |
           for pkg in .cr-release-packages/*; do
             if [ -z "${pkg:-}" ]; then