separate dco from spotless, make dco only run for pull requests. Run on workflow dispatch on demand (#4165)

Signed-off-by: Antoine Toulme <antoine@lunar-ocean.com>

Co-authored-by: Sally MacFarlane <sally.macfarlane@consensys.net>

.github/workflows/checks.yml

@@ -3,6 +3,7 @@ on:
   push:
     branches: [ main ]
   pull_request:
+  workflow_dispatch:
 
 jobs:
   spotless:
@@ -19,16 +20,3 @@ jobs:
           cache: gradle
       - name: spotless
         run: ./gradlew --no-daemon --parallel clean spotlessCheck
-  dco:
-    runs-on: ubuntu-latest
-    if: ${{ github.actor != 'dependabot[bot]' }}
-    steps:
-      - name: Get PR Commits
-        id: 'get-pr-commits'
-        uses: tim-actions/get-pr-commits@v1.2.0
-        with:
-          token: ${{ secrets.GITHUB_TOKEN }}
-      - name: DCO Check
-        uses: tim-actions/dco@v1.1.0
-        with:
-          commits: ${{ steps.get-pr-commits.outputs.commits }}

.github/workflows/dco.yml

@@ -0,0 +1,19 @@
+name: dco
+on:
+  pull_request:
+  workflow_dispatch:
+
+jobs:
+  dco:
+    runs-on: ubuntu-latest
+    if: ${{ github.actor != 'dependabot[bot]' }}
+    steps:
+      - name: Get PR Commits
+        id: 'get-pr-commits'
+        uses: tim-actions/get-pr-commits@v1.2.0
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+      - name: DCO Check
+        uses: tim-actions/dco@v1.1.0
+        with:
+          commits: ${{ steps.get-pr-commits.outputs.commits }}