CI: push to OCI registries

.github/workflows/release.yaml

@@ -8,6 +8,9 @@ on:
 jobs:
   release:
     runs-on: ubuntu-latest
+    permissions:
+      contents: write
+      packages: write
     steps:
       - name: Checkout
         uses: actions/checkout@v3
@@ -19,6 +22,24 @@ jobs:
           git config user.name "$GITHUB_ACTOR"
           git config user.email "[email protected]"
 
+      - name: Login to Docker Hub
+        uses: docker/login-action@v2
+        with:
+          username: ${{ secrets.DOCKER_USERNAME }}
+          password: ${{ secrets.DOCKER_PASSWORD }}
+
+      - name: Login to GitHub Container Registry
+        uses: docker/login-action@v2
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Set up Helm
+        uses: azure/setup-helm@v3
+        with:
+          version: v3.11.2
+
       - name: Add dependancies
         run: |
           helm repo add bitnami https://charts.bitnami.com/bitnami
@@ -27,3 +48,12 @@ jobs:
         uses: helm/[email protected]
         env:
           CR_TOKEN: "${{ secrets.GITHUB_TOKEN }}"
+
+      - name: Push Helm Chart to OCI Registries
+        run: |
+          REPO_OWNER=`echo "${{ github.repository_owner }}" | tr '[:upper:]' '[:lower:]'`
+          # Get packed chart file name
+          PKG_NAME=`ls .cr-release-packages/*.tgz`
+          # pushing chart to OCI registries
+          helm push ${PKG_NAME} oci://registry-1.docker.io/cartesi
+          helm push ${PKG_NAME} oci://ghcr.io/${REPO_OWNER}/charts