🐛 Fix the CI job validating the codeowners (#2641)

* 🐛 Fix the CI job validating the codeowners

Author: gabrieldemarmiesse

.github/workflows/ci_test.yml

@@ -84,19 +84,6 @@ jobs:
     steps:
       - uses: actions/checkout@v2
       - run: bash tools/run_cpu_tests.sh
-  valid-codeowners:
-    name: Check that the CODEOWNERS is valid
-    runs-on: ubuntu-latest
-    steps:
-      - uses: actions/checkout@v2
-      - uses: actions/setup-python@v1
-        with:
-          python-version: 3.7
-      - run: pip install pygithub click
-      - name: Check that the CODEOWNERS is valid
-        env:
-          BOT_TOKEN: ${{ secrets.BOT_TOKEN }}
-        run: python .github/workflows/notify_codeowners.py
   nbfmt:
     name: Notebook format
     runs-on: ubuntu-latest

.github/workflows/validate_codeowners.yml

@@ -0,0 +1,31 @@
+name: Validate codeowners
+
+on:
+  push:
+    branches:
+      - master
+      - r*
+
+#  pull_request_target:
+#    branches:
+#      - master
+#      - r*
+# Enable pull_request_target when notify_codeowners.py can validate the codeowners file
+# of the commit that triggered the workflow, not the commit the workflow is runnng on.
+# Otherwise, it's useless, it just check the codeowners file from the latest commit in master
+
+
+jobs:
+  validate-codeowners:
+    name: Check that the CODEOWNERS is valid
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - uses: actions/setup-python@v1
+        with:
+          python-version: 3.7
+      - run: pip install pygithub click
+      - name: Check that the CODEOWNERS is valid
+        env:
+          BOT_TOKEN: ${{ secrets.BOT_TOKEN }}
+        run: python .github/workflows/notify_codeowners.py