WIP: add job to whitelist users

Author: hoolioh

.github/workflows/allowlist-crate-release.yml

@@ -0,0 +1,49 @@
+name: Check membership
+
+on:
+  push:
+    branches:
+      - julio/publising/add-job-to-whitelist-crate-releases
+  workflow_dispatch:
+    # pull_request:
+    #   types: [opened, edited]
+jobs:
+  get-token:
+    name: read contents of another repo
+    runs-on: ubuntu-latest
+    permissions:
+      id-token: write # Needed to federate tokens.
+    outputs:
+      sts_token: ${{ steps.octo-sts.outputs.token }}
+    steps:
+      - uses: DataDog/dd-octo-sts-action@08f2144903ced3254a3dafec2592563409ba2aa0 # v1.0.1
+        id: octo-sts
+        with:
+          scope: DataDog/libdatadog  # target repository
+          policy: YOUR_POLICY  # trust policy in target repo, without the .sts.yaml extension
+      - name: Use GH token
+        run: |
+          gh auth status
+          gh repo list --visibility=internal DataDog
+        env:
+          GH_TOKEN: ${{ steps.octo-sts.outputs.token }}
+          GH_PAGER: cat  # (unrelated) needed to disable paging of gh cli
+
+  check-membership:
+    runs-on: ubuntu-latest
+    needs: get-token
+    steps:
+      - name: Check if user is in the team allowed to make crate releases
+        id: check
+        uses: TheModdingInquisition/actions-team-membership@057d91bb80f2976a1bc6dfab5b4ae1da9aebbd89 #v1.0.1
+        with:
+          team: 'libdatadog-owners'
+          organization: 'Datadog'
+          token: ${{ needs.get-token.outputs.sts_token }} # Needs 'read:org' scope
+          exit: false
+
+      - name: Check output
+        run: |
+          echo "User is permitted: ${{ steps.check.outputs.permitted }}"
+          echo "Teams: ${{ steps.check.outputs.teams }}"
+