chore: add support for testing release workflow

Signed-off-by: Carlos Salas <carlos.salas@suse.com>

.github/workflows/nightly-test-release.yaml

@@ -0,0 +1,123 @@
+name: Test release process nightly
+
+on:
+  schedule:
+    - cron: "0 0 * * *" # Run every day at midnight (UTC)
+  workflow_dispatch: # Allow running manually on demand
+
+env:
+  RELEASE_TAG: t9.9.9-fake
+
+jobs:
+  nightly-test-release:
+    name: Tag current version for testing
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          ref: main
+          fetch-depth: 0
+      - name: Set and push fake tag for release
+        run: |
+          git tag ${{ env.RELEASE_TAG }}
+      - name: Push changes
+        uses: ad-m/github-push-action@master
+        with:
+          tags: true
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+
+  build-push-services:
+    name: Build, sign and provenance
+    needs: [nightly-test-release]
+    permissions:
+      actions: read
+      contents: write
+      packages: write
+      id-token: write
+    strategy:
+      matrix:
+        destination: [ghcr]
+        arch: [amd64, arm64, s390x]
+        include:
+          - destination: ghcr
+            registry: ghcr.io
+            username: ${{ github.actor }}
+            password: GITHUB_TOKEN
+    uses: ./.github/workflows/release-workflow.yml
+    with:
+      password: ${{ matrix.password }}
+      username: ${{ matrix.username }}
+      registry: ${{ matrix.registry }}
+      tag: t9.9.9-fake
+      arch: ${{ matrix.arch }}
+    secrets:
+      REGISTRY_PASSWORD: ${{ secrets.REGISTRY_PASSWORD }}
+
+  release:
+    name: Create helm release
+    needs: [build-push-services]
+    runs-on: ubuntu-latest
+    env:
+      PROD_REGISTRY: ${{ secrets.REGISTRY_ENDPOINT }}
+      PROD_ORG: rancher-sandbox
+      RELEASE_DIR: .cr-release-packages
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ env.RELEASE_TAG }}
+          fetch-depth: 0
+      - name: Package operator chart
+        run: RELEASE_TAG=${{ env.RELEASE_TAG }} CHART_PACKAGE_DIR=${RELEASE_DIR} REGISTRY=${{ env.PROD_REGISTRY }} ORG=${{ env.PROD_ORG }} make release
+
+  notify-failure:
+    name: Notify failure in Slack
+    needs: [release]
+    if: failure()
+    runs-on: ubuntu-latest
+    steps:
+      - uses: slackapi/slack-github-action@v1.24.0
+        with:
+          payload: |
+            {
+              "blocks": [
+                {
+                  "type": "section",
+                    "text": {
+                      "type": "mrkdwn",
+                      "text": "Rancher turtles RELEASE test failed."
+                    },
+                    "accessory": {
+                      "type": "button",
+                      "text": {
+                        "type": "plain_text",
+                        "text": ":github:",
+                          "emoji": true
+                        },
+                      "url": "${{ github.server_url }}/${{ github.repository }}/actions/runs/${{ github.run_id }}"
+                    }
+                  }
+              ]
+            }
+        env:
+          SLACK_WEBHOOK_URL: ${{ secrets.SLACK_WEBHOOK_URL }}
+          SLACK_WEBHOOK_TYPE: INCOMING_WEBHOOK
+
+  clean-up:
+    name: Release testing clean up
+    needs: [release]
+    if: always()
+    runs-on: ubuntu-latest
+    permissions:
+      contents: write
+    steps:
+      - uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+      - uses: dev-drprasad/delete-tag-and-release@v1.0
+        with:
+          tag_name: ${{ env.RELEASE_TAG }}
+          github_token: ${{ secrets.GITHUB_TOKEN }}
+          delete_release: false