action: Automate CC payload release

Let's create a GitHub action to automate the Kata Containers payload
generation for the Confidential Containers project.

This GitHub action builds the artefacts (in parallel), merges them into
a single tarball, generates the payload with the resulting tarball, and
uploads the payload to the Confidential Containers quay.io.

It expects the tags to be used to be in the `CC-x.y.z` format, with x,
y, and z being numbers.

Fixes: #5330

Signed-off-by: Fabiano Fidêncio <fabiano.fidencio@intel.com>

.github/workflows/cc-payload.yaml

@@ -0,0 +1,87 @@
+name: Publish Kata Containers payload for Confidential Containers
+on:
+  push:
+    tags:
+      - 'CC\-[0-9]+.[0-9]+.[0-9]+'
+
+jobs:
+  build-asset:
+    runs-on: ubuntu-latest
+    strategy:
+      matrix:
+        asset:
+          - cc-cloud-hypervisor
+          - cc-kernel
+          - cc-qemu
+          - cc-rootfs-image
+          - cc-shim-v2
+          - cc-virtiofsd
+          - cc-sev-kernel
+          - cc-sev-ovmf
+          - cc-sev-rootfs-initrd
+          - cc-tdx-kernel
+          - cc-tdx-qemu
+          - cc-tdx-td-shim
+          - cc-tdx-tdvf
+    steps:
+      - uses: actions/checkout@v3
+      - name: Build ${{ matrix.asset }}
+        run: |
+          make "${KATA_ASSET}-tarball"
+          build_dir=$(readlink -f build)
+          # store-artifact does not work with symlink
+          sudo cp -r "${build_dir}" "kata-build"
+        env:
+          KATA_ASSET: ${{ matrix.asset }}
+          TAR_OUTPUT: ${{ matrix.asset }}.tar.gz
+
+      - name: store-artifact ${{ matrix.asset }}
+        uses: actions/upload-artifact@v3
+        with:
+          name: kata-artifacts
+          path: kata-build/kata-static-${{ matrix.asset }}.tar.xz
+          retention-days: 1
+          if-no-files-found: error
+
+  create-kata-tarball:
+    runs-on: ubuntu-latest
+    needs: build-asset
+    steps:
+      - uses: actions/checkout@v3
+      - name: get-artifacts
+        uses: actions/download-artifact@v3
+        with:
+          name: kata-artifacts
+          path: kata-artifacts
+      - name: merge-artifacts
+        run: |
+          ./tools/packaging/kata-deploy/local-build/kata-deploy-merge-builds.sh kata-artifacts
+      - name: store-artifacts
+        uses: actions/upload-artifact@v3
+        with:
+          name: kata-static-tarball
+          path: kata-static.tar.xz
+          retention-days: 1
+          if-no-files-found: error
+
+  kata-payload:
+    needs: create-kata-tarball
+    runs-on: ubuntu-latest
+    steps:
+      - name: Login to quay.io
+        uses: docker/login-action@v2
+        with:
+          registry: quay.io
+          username: ${{ secrets.COCO_QUAY_DEPLOYER_USERNAME }}
+          password: ${{ secrets.COCO_QUAY_DEPLOYER_PASSWORD }}
+
+      - uses: actions/checkout@v3
+      - name: get-kata-tarball
+        uses: actions/download-artifact@v3
+        with:
+          name: kata-static-tarball
+
+      - name: build-and-push-kata-payload
+        id: build-and-push-kata-payload
+        run: |
+          ./tools/packaging/kata-deploy/local-build/kata-deploy-build-and-upload-payload.sh $(pwd)/kata-static.tar.xz