feat(workflow): add workflow to push rules in registry

.github/workflows/release.yaml

@@ -0,0 +1,56 @@
+name: Release Rulesfile
+on: push
+jobs:
+
+  Release-Rulesfile:
+    runs-on: ubuntu-latest
+
+    permissions:
+      id-token: write
+      contents: read
+      packages: write
+
+    env:
+      # Only one ruleset file for our demo
+      RULESET_FILE: nsenter.yaml
+      # Used to setup Auth and OCI artifact location
+      OCI_REGISTRY: ghcr.io
+      # Assuming we are in the main branch, our OCI artifact will
+      # look something like ghcr.io/user/repo/custom-rules:main
+      OCI_ARTIFACT_NAME: custom-rules
+      OCI_ARTIFACT_VERSION: ${{ github.ref_name }}
+
+    steps:
+      - name: Checkout Falcoctl Repo
+        uses: actions/checkout@v3
+        with:
+          repository: falcosecurity/falcoctl
+          ref: main
+          path: tools/falcoctl
+
+      - name: Setup Golang
+        uses: actions/setup-go@v4
+        with:
+          go-version: '^1.20'
+          cache-dependency-path: tools/falcoctl/go.sum
+
+      - name: Build falcoctl
+        run: make
+        working-directory: tools/falcoctl
+
+      - name: Checkout Rules Repo
+        uses: actions/checkout@v3
+        with:
+          path: rules
+
+      - name: Upload OCI artifacts to GitHub packages
+        run: |
+          tools/falcoctl/falcoctl registry push \
+          --config /dev/null \
+          --type rulesfile \
+          --version ${OCI_ARTIFACT_VERSION} \
+          ${OCI_REGISTRY}/${GITHUB_REPOSITORY}/${OCI_ARTIFACT_NAME}:${OCI_ARTIFACT_VERSION} \
+          rules/${RULESET_FILE}
+        
+        env:
+          FALCOCTL_REGISTRY_AUTH_BASIC: ${{ env.OCI_REGISTRY }},${{ github.repository_owner }},${{ secrets.GITHUB_TOKEN }}