同步
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# ==================== 构建阶段 ====================
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# 基础镜像:3.12-slim轻量化,小镜像
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FROM python:3.12-slim AS builder
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FROM python:3.12-slim as builder
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# 设置工作目录
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# 构建阶段:隔离构建依赖,最终镜像仅保留运行时,镜像瘦身
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WORKDIR /app
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WORKDIR /app
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# 设置环境变量
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# 默认测试环境,可通过env修改 development/production
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ENV PYTHONUNBUFFERED=1 \
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ENV PYTHONUNBUFFERED=1 \
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PYTHONDONTWRITEBYTECODE=1 \
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PYTHONDONTWRITEBYTECODE=1 \
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UV_SYSTEM_PYTHON=1 \
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UV_SYSTEM_PYTHON=1 \
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UV_HTTP_TIMEOUT=600 \
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UV_HTTP_TIMEOUT=600 \
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UV_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple \
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UV_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple \
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UV_EXTRA_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple
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UV_EXTRA_INDEX_URL=https://pypi.tuna.tsinghua.edu.cn/simple \
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# 可外部覆盖的核心启动参数
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APP_ENV=test \
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APP_PORT=8031 \
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APP_HOST=0.0.0.0 \
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# 是否开启热重载:默认关闭(生产/测试环境不需要),开发环境可设为1
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APP_RELOAD=0 \
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# 日志配置文件:默认使用json配置,可设为空关闭
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APP_LOG_CONFIG=logging_config.json
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# 安装系统依赖和构建工具
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# 安装构建依赖(仅builder阶段需要,运行时镜像会剔除)
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RUN apt-get update && apt-get install -y --no-install-recommends \
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RUN apt-get update && apt-get install -y --no-install-recommends \
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gcc \
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gcc \
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g++ \
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g++ \
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build-essential \
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build-essential \
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python3-dev \
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python3-dev \
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&& rm -rf /var/lib/apt/lists/*
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&& rm -rf /var/lib/apt/lists/* \
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# 清理apt缓存,进一步减小构建层体积
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&& apt-get clean
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# 使用 uv 官方镜像中的二进制文件(不用 pip install uv )
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# 复制uv和依赖文件(**核心缓存层**:仅pyproject.toml/uv.lock变更时才重新安装依赖)
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COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv
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COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv
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# 复制依赖文件(利用 Docker 缓存)
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COPY pyproject.toml uv.lock ./
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COPY pyproject.toml uv.lock ./
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# 安装项目依赖(不包括开发依赖,使用 frozen 锁定版本)
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# 安装依赖:--frozen锁定版本,--no-dev默认安装生产依赖(开发环境可通过uv sync --dev覆盖)
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# 依赖安装到venv,保证隔离性,同时支持uv run调用
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RUN uv sync --frozen --no-dev
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RUN uv sync --frozen --no-dev
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# ==================== 运行阶段 ====================
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# ==================== 运行时阶段(最终镜像)====================
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FROM python:3.12-slim AS runtime
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FROM python:3.12-slim as runtime
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# 设置工作目录
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# 继承构建阶段的环境变量(可被外部传参覆盖)
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WORKDIR /app
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# 设置环境变量
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ENV PYTHONUNBUFFERED=1 \
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ENV PYTHONUNBUFFERED=1 \
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PYTHONDONTWRITEBYTECODE=1 \
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PYTHONDONTWRITEBYTECODE=1 \
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UV_SYSTEM_PYTHON=1 \
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UV_SYSTEM_PYTHON=1
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PATH="/app/.venv/bin:$PATH"
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# 从构建阶段复制依赖
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# 设置工作目录,与构建阶段一致
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WORKDIR /app
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# 从builder阶段复制:仅保留运行时必需的文件(依赖+uv),剔除所有构建工具
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COPY --from=builder /usr/local/bin/uv /usr/local/bin/uv
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COPY --from=builder /app/.venv /app/.venv
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COPY --from=builder /app/.venv /app/.venv
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COPY --from=ghcr.io/astral-sh/uv:latest /uv /usr/local/bin/uv
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COPY --from=builder /app/pyproject.toml /app/uv.lock ./
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# 创建非 root 用户
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# 复制项目源码(源码变更不影响依赖缓存层,大幅提升构建速度)
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RUN groupadd -r appuser && useradd -r -g appuser appuser \
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COPY . .
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&& chown -R appuser:appuser /app
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# 复制项目文件
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# 暴露端口:与默认APP_PORT一致
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COPY --chown=appuser:appuser . .
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EXPOSE ${APP_PORT}
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# 切换到非 root 用户
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# 启动脚本:用shell脚本解析环境变量,动态生成启动命令
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USER appuser
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CMD ["/bin/sh", "-c", \
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"if [ $APP_RELOAD -eq 1 ]; then \
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# 暴露端口
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uv run uvicorn app.main:app --host $APP_HOST --port $APP_PORT --reload ${APP_LOG_CONFIG:+-log-config $APP_LOG_CONFIG}; \
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EXPOSE 8031
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else \
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uv run uvicorn app.main:app --host $APP_HOST --port $APP_PORT ${APP_LOG_CONFIG:+-log-config $APP_LOG_CONFIG}; \
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# 健康检查
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fi" \
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HEALTHCHECK --interval=30s --timeout=10s --start-period=5s --retries=3 \
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]
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CMD python -c "from urllib.request import urlopen; urlopen('http://localhost:8031/health', timeout=5).read()" || exit 1
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# 启动命令
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CMD ["uvicorn", "app.main:app", "--host", "0.0.0.0", "--port", "8031", "--workers", "1"]
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