diff --git a/.gitea/workflows/cd.yaml b/.gitea/workflows/cd.yaml
index e663c5e5..d857f6e4 100644
--- a/.gitea/workflows/cd.yaml
+++ b/.gitea/workflows/cd.yaml
@@ -135,14 +135,18 @@ jobs:
             < tests/integration/setup_test_schema.sql
           PG_CONTAINER=$(docker ps --filter name=postgres-test --format '{{.Names}}' | head -1)
           echo "postgres container: $PG_CONTAINER"
-          # 在 postgres container 的網路命名空間內跑 pytest，localhost:5432 直連
-          docker run --rm \
+          # DinD: volume mount 不可靠，用 docker cp 把代碼放進臨時 container
+          # 共享 postgres container 網路命名空間，localhost:5432 直連
+          PYTEST_CTR=$(docker create \
             --network "container:${PG_CONTAINER}" \
-            -v /opt/api-venv:/opt/api-venv \
-            -v "$(pwd):/workspace" -w /workspace \
+            -w /workspace \
             -e TEST_DATABASE_URL="postgresql+asyncpg://awoooi:awoooi_test_2026@localhost:5432/awoooi_test?ssl=disable" \
             python:3.11-slim \
-            /opt/api-venv/bin/pytest tests/integration/test_b5_core_flows.py -v --tb=short
+            sh -c "pip install -q uv && uv pip install -q --system -e '.[dev]' && pytest tests/integration/test_b5_core_flows.py -v --tb=short")
+          docker cp . "$PYTEST_CTR:/workspace"
+          docker start -a "$PYTEST_CTR"
+          TEST_EXIT=$?
+          docker rm "$PYTEST_CTR" 2>/dev/null || true
           TEST_EXIT=$?
           docker compose -f docker-compose.test.yml down -v 2>/dev/null || true
           exit $TEST_EXIT