fix docker build

Author: shinonomeow

Dockerfile

@@ -1,70 +1,76 @@
 # syntax=docker/dockerfile:1
 
-FROM alpine:3.18
+# 构建阶段
+FROM alpine:3.18 AS builder
 
-ENV LANG="C.UTF-8" \
-  TZ=Asia/Shanghai \
-  PUID=1000 \
-  PGID=1000 \
-  UMASK=022 \
-  VENV_PATH="/opt/venv" \
-  PATH="$VENV_PATH/bin:$PATH"\
-  PATH="/root/.local/bin:$PATH"
+ENV VENV_PATH="/opt/venv"
 
+# 安装构建依赖
+RUN apk add --no-cache \
+    python3 \
+    python3-dev \
+    gcc \
+    musl-dev \
+    libffi-dev \
+    rust \
+    cargo \
+    curl
 
-WORKDIR /app
+# 安装 uv
+RUN curl -LsSf https://astral.sh/uv/install.sh | sh
+ENV PATH="/root/.local/bin:$PATH"
+
+# 设置工作目录
+WORKDIR /build
 
-# Copy Python project files
+# 复制依赖文件并安装（这层会被缓存，除非依赖文件改变）
 COPY backend/pyproject.toml backend/uv.lock ./
 
+# 安装Python依赖
+RUN uv sync --frozen --no-dev && mv .venv $VENV_PATH
+
+# 运行阶段
+FROM alpine:3.18 AS runtime
+
+ENV LANG="C.UTF-8" \
+    TZ=Asia/Shanghai \
+    PUID=1000 \
+    PGID=1000 \
+    UMASK=022 \
+    VENV_PATH="/opt/venv" \
+    PATH="/opt/venv/bin:/root/.local/bin:$PATH"
+
+WORKDIR /app
+
+# 只安装运行时依赖
 RUN set -ex && \
-  apk add --no-cache \
-  bash \
-  busybox-suid \
-  python3 \
-  python3-dev \
-  py3-aiohttp \
-  py3-bcrypt \
-  curl \
-  gcc \
-  musl-dev \
-  libffi-dev \
-  su-exec \
-  shadow \
-  tini \
-  openssl \
-  tzdata \
-  rust \
-  cargo && \
-  # Install uv
-  curl -LsSf https://astral.sh/uv/install.sh | sh && \
-  # Verify uv installation and show version
-  # Install dependencies using uv
-  uv sync --frozen --no-dev && \
-  # 移动 .venv 到目标位置
-  mv .venv $VENV_PATH && \
-  # Remove build dependencies to reduce image size
-  apk del \
-  rust \
-  cargo \
-  gcc \
-  musl-dev \
-  libffi-dev \
-  python3-dev && \
-  # Add user
-  mkdir -p /home/ab && \
-  addgroup -S ab -g 911 && \
-  adduser -S ab -G ab -h /home/ab -s /sbin/nologin -u 911 && \
-  # Clear
-  rm -rf \
-  /root/.cache \
-  /root/.local \
-  /tmp/*
+    apk add --no-cache \
+    bash \
+    busybox-suid \
+    python3 \
+    py3-aiohttp \
+    py3-bcrypt \
+    curl \
+    su-exec \
+    shadow \
+    tini \
+    openssl \
+    tzdata && \
+    # 添加用户
+    mkdir -p /home/ab && \
+    addgroup -S ab -g 911 && \
+    adduser -S ab -G ab -h /home/ab -s /sbin/nologin -u 911 && \
+    # 清理缓存
+    rm -rf /var/cache/apk/* /tmp/*
 
+# 从构建阶段复制虚拟环境
+COPY --from=builder $VENV_PATH $VENV_PATH
+
+# 复制应用代码（放在最后，因为代码变更最频繁）
 COPY --chmod=755 backend/src/. .
 COPY --chmod=755 entrypoint.sh /entrypoint.sh
 
 ENTRYPOINT ["tini", "-g", "--", "/entrypoint.sh"]
-
 EXPOSE 7892
 VOLUME [ "/app/config" , "/app/data" ]
+