update CI/CD workflow: replace containerized testing and deployment with system-installed dependencies

.gitea/workflows/ci-cd.yml

@@ -9,12 +9,15 @@ on:
 jobs:
   test:
     runs-on: ubuntu-latest
-    container:
-      image: python:3.13-slim
     steps:
       - name: 저장소 체크아웃
         uses: actions/checkout@v4
 
+      - name: Python 3.13 설치
+        uses: actions/setup-python@v5
+        with:
+          python-version: '3.13'
+
       - name: 테스트용 .env 준비
         run: |
           cat > .env <<'EOF'
@@ -32,14 +35,14 @@ jobs:
     needs: test
     if: gitea.ref == 'refs/heads/main'
     runs-on: ubuntu-latest
-    container:
-      image: alpine:3.20
     steps:
       - name: 저장소 체크아웃
         uses: actions/checkout@v4
 
       - name: ssh/rsync 설치
-        run: apk add --no-cache openssh-client rsync
+        run: |
+          sudo apt-get update
+          sudo apt-get install -y --no-install-recommends openssh-client rsync
 
       - name: SSH 키 준비
         run: |