Add some actions to OK workflow

Signed-off-by: Vitaliy Potyarkin <v.potyarkin@yadro.com>

.forgejo/workflows/ok.yml

@@ -1,12 +1,20 @@
-name: Always succeed
+# yamllint disable rule:truthy
+
+name: DCO check
 on:
   workflow_call:
 
 jobs:
-  ok:
-    name: OK
+  dco:
+    name: DCO
     runs-on: docker
     container:
       image: node:22-bookworm
     steps:
-      - run: echo OK
+      - uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - run: |-
+          pwd
+          find ! -type d