ci: 配置 Docker 容器运行、镜像源及自建 checkout action

.gitea/workflow/backend-ci.yml

@@ -11,15 +11,14 @@ on:
 jobs:
   ci:
     runs-on: aliyun
+    container: golang:1.23-bookworm
+    env:
+      GOPROXY: https://goproxy.cn,direct
     defaults:
       run:
         working-directory: backend
     steps:
-      - uses: actions/checkout@v4
-
-      - uses: actions/setup-go@v5
-        with:
-          go-version: "1.23"
+      - uses: http://8.161.227.145:3000/huanghaosheng/checkout@releases/v4
 
       - name: Download dependencies
         run: go mod download