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# =============================================================================
# Stage 1: 前端构建(Node.js 环境,仅用于编译,不进入最终镜像)
# =============================================================================
FROM node:20-slim AS frontend-builder
WORKDIR /build/frontend
# 先复制 package.json,利用 Docker layer 缓存
# 只要 package.json 不变,npm install 层就不会重新执行
COPY frontend/package*.json ./
RUN npm ci --prefer-offline
# 复制源码并构建
COPY frontend/ ./
RUN npm run build
# 产物在 /build/frontend/dist/
# =============================================================================
# Stage 2: Python 依赖安装(仅用于安装,不进入最终镜像)
# =============================================================================
FROM python:3.11-slim AS python-builder
# 安装编译 Python 包所需的系统依赖(pillow-heif/pyheif 需要 libheif)
RUN apt-get update && apt-get install -y --no-install-recommends \
libheif-dev \
build-essential \
pkg-config \
&& rm -rf /var/lib/apt/lists/*
# 安装 Python 依赖到独立目录,便于复制到最终镜像
COPY backend/requirements.txt .
RUN pip install --no-cache-dir --prefix=/install -r requirements.txt
# =============================================================================
# Stage 3: 最终运行镜像(只包含运行所需,不含任何构建工具)
# =============================================================================
FROM python:3.11-slim AS runtime
# ---- 系统运行时依赖(只要 runtime 库,不要 -dev 包)----
# ffmpeg: 视频首帧提取(必须)
# libheif1: HEIC 格式运行时支持(pillow-heif 依赖)
# libsm6/libxext6/libgl1: OpenCV 运行时(opencv-python 依赖)
# locales: 中文支持
RUN apt-get update && apt-get install -y --no-install-recommends \
ffmpeg \
libheif1 \
libsm6 \
libxext6 \
libgl1 \
locales \
&& sed -i '/zh_CN.UTF-8/s/^# //g' /etc/locale.gen \
&& locale-gen \
&& rm -rf /var/lib/apt/lists/*
ENV LANG=zh_CN.UTF-8 \
LANGUAGE=zh_CN:zh \
LC_ALL=zh_CN.UTF-8
# ---- 从 python-builder 复制 Python 包 ----
COPY --from=python-builder /install /usr/local
# ---- 从 frontend-builder 复制编译后的静态文件 ----
COPY --from=frontend-builder /build/frontend/dist /app/frontend/dist
# ---- 复制后端代码 ----
WORKDIR /app
COPY backend/ .
# ---- 创建必要的数据目录 ----
RUN mkdir -p data/images data/cache/thumbnails data/cache/converted \
&& chown -R 1000:1000 /app
# 只暴露后端 API 端口(前端静态文件由 FastAPI 托管)
EXPOSE 8000
# 以非 root 用户运行(安全最佳实践)
USER 1000
CMD ["uvicorn", "main:app", "--host", "0.0.0.0", "--port", "8000"]