Add a github action to check for "Signed-off-by"

Signed-off-by: Bernd Schubert <bernd@bsbernd.com>

diff --git a/.github/workflows/dco.yml b/.github/workflows/dco.yml
new file mode 100644 (file)
index 0000000..1a2121d
--- /dev/null
+++ b/.github/workflows/dco.yml
@@ -0,0 +1,28 @@
+name: DCO Check (Developer Certificate of Origin)
+
+on:
+  pull_request:
+    types: [opened, synchronize, reopened]
+
+jobs:
+  check-dco:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
+      with:
+        fetch-depth: 0
+    - name: Check DCO
+      env:
+        GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+        GH_REPO: ${{ github.repository }}
+      run: |
+        echo "Checking DCO for PR #${{ github.event.pull_request.number }}"
+        commits=$(gh pr view ${{ github.event.pull_request.number }} --json commits --jq '.commits[].oid')
+        for commit in $commits
+        do
+          if ! git log --format='%B' -n 1 $commit | grep -q "Signed-off-by:"; then
+            echo "Commit $commit is missing Signed-off-by line"
+            exit 1
+          fi
+        done
+        echo "All commits have Signed-off-by lines"