ci: fix docker restart for non-systemd runners

Gitea Act Runner containers don't use systemd. Fall back to
service/init.d for restarting dockerd after configuring insecure registry.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

.gitea/workflows/ci.yml

@@ -148,7 +148,12 @@ jobs:
         run: |
           sudo mkdir -p /etc/docker
           echo '{"insecure-registries":["${{ env.GITEA_REGISTRY }}"]}' | sudo tee /etc/docker/daemon.json
-          sudo systemctl restart docker
+          # Restart docker - try systemctl first, fall back to service for non-systemd runners
+          if command -v systemctl &>/dev/null && systemctl is-system-running &>/dev/null; then
+            sudo systemctl restart docker
+          else
+            sudo service docker restart || sudo /etc/init.d/docker restart
+          fi
 
       - name: Login to Gitea container registry
         run: |