fix: 使用 Alpine 容器镜像解决 checkout action 找不到 node 的问题

.gitea/workflows/backend-ci.yml

@@ -9,10 +9,14 @@ on:
 jobs:
   ci:
     runs-on: aliyun
+    container: golang:1.23-alpine
     defaults:
       run:
         working-directory: backend
     steps:
+      - name: Install Node.js (for checkout action)
+        run: apk add --no-cache nodejs
+
       - uses: "http://8.161.227.145:3000/huanghaosheng/checkout@releases/v4"
 
       - name: Download dependencies

.gitea/workflows/frontend-ci.yml

@@ -9,6 +9,7 @@ on:
 jobs:
   ci:
     runs-on: aliyun
+    container: node:22-alpine
     defaults:
       run:
         working-directory: frontend

.gitea/workflows/health-test.yml

@@ -6,6 +6,7 @@ on: [push]
 jobs:
   health:
     runs-on: aliyun
+    container: node:22-alpine
     steps:
       - run: echo "🎉 Triggered by ${{ gitea.event_name }} event"
       - run: echo "🌿 Branch: ${{ gitea.ref }}, Repo: ${{ gitea.repository }}"