diff --git a/sync.py b/sync.py
index 65ac29e..7c1b1bd 100644
--- a/sync.py
+++ b/sync.py
@@ -40,6 +40,19 @@ async def docker_push(image: str) -> int | None:
     print(f"Pushing image {image}...")
     return await run_command(f"docker push {image}")
 
+async def docker_task(source: str, target: str) -> int | None:
+    print(f"Pulling image {source}...")
+    if r := await docker_pull(source):
+        if r != 0:
+            return r
+    if r := await docker_tag(source, target):
+        if r != 0:
+            return r
+    if r := await docker_push(target):
+        if r != 0:
+            return r
+    return 0
+
 semaphore = asyncio.Semaphore(50)
 
 async def limited_task[T: Any](task: Callable[[], Coroutine[None, None, T]]) -> T:
@@ -61,38 +74,11 @@ async def main():
     for image in config.images:
         if len(image.tags) > 0:
             for tag in image.tags:
-                # 定义任务函数
-                async def task():
-                    print(f"Pulling image {image.source}:{tag}...")
-                    if r := await docker_pull(f"{image.source}:{tag}"):
-                        if r != 0:
-                            return r
-                    await docker_tag(f"{image.source}:{tag}", f"{image.target}:{tag}")
-                    if r := await docker_push(f"{image.target}:{tag}"):
-                        if r != 0:
-                            return r
-                    await docker_push(f"{image.target}:{tag}")
-                    if r := await docker_push(image.target):
-                        if r != 0:
-                            return r
-                    return 0
                         
                 # 将协程对象添加到任务列表
-                tasks.append(limited_task(task))
+                tasks.append(limited_task(docker_task(f"{image.target}:{tag}", f"{image.target}:{tag}")))
         else:
-            async def task():
-                print(f"Pulling image {image.source}...")
-                if r := await docker_pull(image.source):
-                    if r != 0:
-                        return r
-                if r:= await docker_tag(image.source, image.target):
-                    if r != 0:
-                        return r
-                if r := await docker_push(image.target):
-                    if r != 0:
-                        return r
-                return 0
-            tasks.append(limited_task(task))
+            tasks.append(limited_task(docker_task(image.source, image.target)))
 
     results = await asyncio.gather(*tasks)
     failed_tasks = 0