fix(ci): test backend in container environment

Dockerfile

@@ -1,4 +1,4 @@
-FROM condaforge/miniforge3:latest
+FROM condaforge/miniforge3:latest AS base
 
 WORKDIR /app
 
@@ -20,8 +20,6 @@ COPY app ./app
 COPY contracts ./contracts
 COPY infra ./infra
 COPY resources ./resources
-COPY scripts/check_openapi.py ./scripts/check_openapi.py
-COPY tests ./tests
 RUN python -c "from pathlib import Path; from zipfile import ZipFile; model_dir = Path('app/algorithms/pipe_health_prediction/model'); zip_path = model_dir / 'my_survival_forest_model_quxi.zip'; joblib_name = 'my_survival_forest_model_quxi.joblib'; joblib_path = model_dir / joblib_name; assert zip_path.exists(), f'Model archive not found: {zip_path}'; archive = ZipFile(zip_path); archive.extract(joblib_name, model_dir); archive.close(); assert joblib_path.exists(), f'Model file not extracted: {joblib_path}'" && \
     rm -f app/algorithms/pipe_health_prediction/model/my_survival_forest_model_quxi.zip
 RUN mkdir -p db_inp temp data inp
@@ -29,6 +27,16 @@ RUN mkdir -p db_inp temp data inp
 # 设置 PYTHONPATH 以便 uvicorn 找到 app 模块
 ENV PYTHONPATH=/app
 
+FROM base AS test
+COPY scripts ./scripts
+COPY tests ./tests
+RUN python -m compileall -q app && \
+    python -c "import app.main" && \
+    python scripts/check_openapi.py && \
+    pytest -q tests
+
+FROM base AS runner
+
 EXPOSE 8000
 
 CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8000", "--workers", "4"]