🔧 更新 GitHub Actions Docker 工作流配置

- 扩展 Docker 工作流触发分支，支持 main 和 master 分支

.github/workflows/docker.yml

@@ -2,9 +2,9 @@ name: Docker Build and Push
 
 on:
   push:
-    branches: [ main ]
+    branches: [ main, master ]
   pull_request:
-    branches: [ main ]
+    branches: [ main, master ]
 
 env:
   REGISTRY: docker.io