FROM python:3.9-alpine

# 构建参数
ARG APP_VERSION=v1.0
ARG BUGGY=false

# 设置时区
RUN apk add --no-cache tzdata && \
    cp /usr/share/zoneinfo/Asia/Shanghai /etc/localtime && \
    echo "Asia/Shanghai" > /etc/timezone

ENV TZ=Asia/Shanghai \
    APP_VERSION=${APP_VERSION} \
    BUGGY=${BUGGY}

WORKDIR /app

COPY requirements.txt .
RUN pip install --no-cache-dir -r requirements.txt

COPY app.py .

EXPOSE 80

# 添加健康检查（v2.0+ 特性）
HEALTHCHECK --interval=10s --timeout=3s --start-period=30s --retries=3 \
    CMD wget -q --spider http://127.0.0.1:80/health 2>&1 || exit 1

CMD ["python", "app.py"]