Add .gitea/workflows/*.yaml

.gitea/workflows/docker-build.yml

@@ -35,6 +35,16 @@ jobs:
           push: true
           tags: gitea.cuihang1201.synology.me/hangpersonal/docker_build:latest
 
+
+      - name: Clean up Buildx builder
+        if: ${{ always() }}
+        run: |
+          docker buildx ls
+          BUILDER=$(docker buildx ls | awk '/builder/ {print $1; exit}')
+          if [ -n "$BUILDER" ]; then
+            docker buildx rm "$BUILDER" || true
+          fi
+    
       # Optional quick health check, runs detached and then cleaned up
       - name: Smoke test
         run: |