gha: Add GHA workflow to run Kata CoCo stability tests

This PR adds a GHA workflow to run Kata CoCo weekly stablity tests.

Signed-off-by: Gabriela Cervantes <gabriela.cervantes.tellez@intel.com>

.github/workflows/ci-weekly.yaml

@@ -0,0 +1,86 @@
+name: Run the CoCo Kata Containers Stability CI
+on:
+  workflow_call:
+    inputs:
+      commit-hash:
+        required: true
+        type: string
+      pr-number:
+        required: true
+        type: string
+      tag:
+        required: true
+        type: string
+      target-branch:
+        required: false
+        type: string
+        default: ""
+
+jobs:
+  build-kata-static-tarball-amd64:
+    uses: ./.github/workflows/build-kata-static-tarball-amd64.yaml
+    with:
+      tarball-suffix: -${{ inputs.tag }}
+      commit-hash: ${{ inputs.commit-hash }}
+      target-branch: ${{ inputs.target-branch }}
+
+  publish-kata-deploy-payload-amd64:
+    needs: build-kata-static-tarball-amd64
+    uses: ./.github/workflows/publish-kata-deploy-payload-amd64.yaml
+    with:
+      tarball-suffix: -${{ inputs.tag }}
+      registry: ghcr.io
+      repo: ${{ github.repository_owner }}/kata-deploy-ci
+      tag: ${{ inputs.tag }}-amd64
+      commit-hash: ${{ inputs.commit-hash }}
+      target-branch: ${{ inputs.target-branch }}
+    secrets: inherit
+
+  build-and-publish-tee-confidential-unencrypted-image:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
+        with:
+          ref: ${{ inputs.commit-hash }}
+          fetch-depth: 0
+
+      - name: Rebase atop of the latest target branch
+        run: |
+          ./tests/git-helper.sh "rebase-atop-of-the-latest-target-branch"
+        env:
+          TARGET_BRANCH: ${{ inputs.target-branch }}
+
+      - name: Set up QEMU
+        uses: docker/setup-qemu-action@v3
+
+      - name: Set up Docker Buildx
+        uses: docker/setup-buildx-action@v3
+
+      - name: Login to Kata Containers ghcr.io
+        uses: docker/login-action@v3
+        with:
+          registry: ghcr.io
+          username: ${{ github.actor }}
+          password: ${{ secrets.GITHUB_TOKEN }}
+
+      - name: Docker build and push
+        uses: docker/build-push-action@v5
+        with:
+          tags: ghcr.io/kata-containers/test-images:unencrypted-${{ inputs.pr-number }}
+          push: true
+          context: tests/integration/kubernetes/runtimeclass_workloads/confidential/unencrypted/
+          platforms: linux/amd64
+          file: tests/integration/kubernetes/runtimeclass_workloads/confidential/unencrypted/Dockerfile
+
+  run-kata-coco-stability-tests:
+    needs: [publish-kata-deploy-payload-amd64, build-and-publish-tee-confidential-unencrypted-image]
+    uses: ./.github/workflows/run-kata-coco-stability-tests.yaml
+    with:
+      registry: ghcr.io
+      repo: ${{ github.repository_owner }}/kata-deploy-ci
+      tag: ${{ inputs.tag }}-amd64
+      commit-hash: ${{ inputs.commit-hash }}
+      pr-number: ${{ inputs.pr-number }}
+      target-branch: ${{ inputs.target-branch }}
+    secrets: inherit