Fix clone step with alpine/git image

- Use alpine/git image for clone step to resolve git issues
- This should fix the clone operation completely
- Keep pipeline steps focused on GameAdm testing

.woodpecker.yml

@@ -1,8 +1,11 @@
+clone:
+  git:
+    image: alpine/git:latest
+
 steps:
   - name: test-syntax
     image: alpine:latest
     commands:
-      - apk add --no-cache git  # Install git for Alpine
       - echo "=== GameAdm CI Pipeline ==="
       - echo "Testing repository structure..."
       - ls -la