prepare fastapi root layout for server deployment

Dockerfile

@@ -2,27 +2,26 @@ FROM python:3.11-slim
 
 ENV PYTHONDONTWRITEBYTECODE=1 \
     PYTHONUNBUFFERED=1 \
-    PIP_NO_CACHE_DIR=1
+    PIP_NO_CACHE_DIR=1 \
+    APP_ENV=production
 
 WORKDIR /app
 
-COPY backend/requirements.txt ./requirements.txt
+COPY requirements.txt .
 
 RUN pip install -i https://pypi.tuna.tsinghua.edu.cn/simple \
     --no-cache-dir \
     -r requirements.txt
 
-COPY backend ./backend
+COPY app ./app
+COPY scripts ./scripts
+COPY pyproject.toml README.md ./
 
-WORKDIR /app/backend
+RUN mkdir -p /app/logs /app/storage/reports
 
 EXPOSE 9000
 
-CMD [
-  "uvicorn",
-  "app.main:app",
-  "--host",
-  "0.0.0.0",
-  "--port",
-  "9000"
-]
+HEALTHCHECK --interval=30s --timeout=5s --start-period=20s --retries=3 \
+    CMD python -c "import urllib.request; urllib.request.urlopen('http://127.0.0.1:9000/health/live', timeout=3)"
+
+CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "9000", "--proxy-headers", "--forwarded-allow-ips=*"]