ci: 添加 Gitea Actions 示例工作流

- 新增 ci.yaml 文件，定义 Gitea Actions 示例

.gitea/workflows/ci.yaml

@@ -9,6 +9,11 @@ on:
 jobs:
   build:
     runs-on: gitea_labels
+    container:
+      image: docker:24.0.7
+      volumes:
+        - /var/run/docker.sock:/var/run/docker.sock
+        - /opt/dockeropt/epic-go:/opt/dockeropt/epic-go
     steps:
       - name: 检出代码
         run: |