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# 第一阶段：Node.js 20 LTS 构建环境
FROM node:20-alpine AS node-builder
WORKDIR /app
# 如果有 Node.js 依赖，在这里安装
# COPY package*.json ./
# RUN npm ci --only=production
# 第二阶段：Python 3.12 构建环境
FROM python:3.12-slim AS python-builder
WORKDIR /app
# 安装构建依赖
RUN apt-get update && apt-get install -y \
gcc \
&& rm -rf /var/lib/apt/lists/*
# 复制并安装 Python 依赖
COPY requirements.txt .
RUN pip install --no-cache-dir --user -r requirements.txt
# 第三阶段：生产运行环境
FROM python:3.12-slim AS production
# 设置环境变量
ENV PYTHONDONTWRITEBYTECODE=1 \
PYTHONUNBUFFERED=1 \
PATH="/home/user/.local/bin:$PATH"
# 创建非 root 用户
RUN useradd --create-home --shell /bin/bash user
WORKDIR /app
# 从构建阶段复制 Python 包
COPY --from=python-builder /root/.local /home/user/.local
# 复制应用代码
COPY --chown=user . .
# 切换到非 root 用户
USER user
# 暴露 HuggingFace 标准端口
EXPOSE 7860
# 健康检查
HEALTHCHECK --interval=30s --timeout=30s --start-period=5s --retries=3 \
CMD curl -f http://localhost:7860/health || exit 1
# 启动命令
CMD ["gunicorn", "-k", "uvicorn.workers.UvicornWorker", "-w", "1", "-b", "0.0.0.0:7860", "app:app"]
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