ci: Use git commands instead of checkout action

.gitea/workflows/deploy.yml

@@ -10,7 +10,10 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout Code
-        uses: actions/checkout@v4
+        run: |
+          git config --global --add safe.directory '*'
+          rm -rf * .git || true
+          git clone --depth 1 $GITHUB_SERVER_URL/$GITHUB_REPOSITORY.git .
 
       - name: Build Docker Image
         run: docker build -t bootstrap-auth-server:latest .