feat: optimize Docker build process

Author: shinonomeow

Dockerfile

@@ -1,67 +1,95 @@
-# syntax=docker/dockerfile:1
-
-FROM alpine:3.18
+# Multi-stage Dockerfile for Auto_Bangumi
+# Stage 1: Python base runtime
+FROM alpine:3.18 AS python-base
 
 ENV LANG="C.UTF-8" \
     TZ=Asia/Shanghai \
     PUID=1000 \
     PGID=1000 \
     UMASK=022 \
-    PATH="/root/.local/bin:$PATH"
+    VENV_PATH="/opt/venv"
+
+# Install runtime system packages
+RUN set -ex && \
+    apk add --no-cache \
+    bash \
+    busybox-suid \
+    python3 \
+    py3-aiohttp \
+    py3-bcrypt \
+    curl \
+    su-exec \
+    shadow \
+    tini \
+    openssl \
+    tzdata && \
+    # Set timezone
+    ln -sf /usr/share/zoneinfo/$TZ /etc/localtime && \
+    echo $TZ > /etc/timezone
+
+# Stage 2: Build dependencies
+FROM python-base AS build-deps
+
+# Install build tools and dependencies
+RUN set -ex && \
+    apk add --no-cache \
+    build-base \
+    gcc \
+    musl-dev \
+    libffi-dev \
+    python3-dev \
+    rust \
+    cargo
+
+# Install uv package manager
+RUN curl -LsSf https://astral.sh/uv/install.sh | sh && \
+    mv /root/.cargo/bin/uv /usr/local/bin/uv && \
+    uv --version
+
+# Stage 3: Python virtual environment
+FROM build-deps AS python-venv
+
+ENV PATH="${VENV_PATH}/bin:${PATH}"
 
 WORKDIR /app
 
 # Copy Python project files
 COPY backend/pyproject.toml backend/uv.lock ./
 
+# Create virtual environment and install dependencies
 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
-    uv --version && \
     # Check if lock file exists and is readable
     ls -la uv.lock && \
+    # Create virtual environment
+    python3 -m venv ${VENV_PATH} && \
     # Install dependencies using uv
     uv sync --frozen --no-dev && \
-    # Remove build dependencies to reduce image size
-    apk del \
-        rust \
-        cargo \
-        gcc \
-        musl-dev \
-        libffi-dev \
-        python3-dev && \
-    # Add user
+    # Clear cache
+    rm -rf /root/.cache
+
+# Stage 4: Final runtime image
+FROM python-base AS final
+
+ENV PATH="/root/.local/bin:${VENV_PATH}/bin:${PATH}"
+
+WORKDIR /app
+
+# Copy virtual environment from build stage
+COPY --from=python-venv --chown=root:root ${VENV_PATH} ${VENV_PATH}
+
+# Add user
+RUN set -ex && \
     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/*
+    adduser -S ab -G ab -h /home/ab -s /sbin/nologin -u 911
 
+# Copy application code and scripts
 COPY --chmod=755 backend/src/. .
 COPY --chmod=755 entrypoint.sh /entrypoint.sh
 
+# Set proper permissions
+RUN chown -R ab:ab /app /home/ab
+
 ENTRYPOINT ["tini", "-g", "--", "/entrypoint.sh"]
 
 EXPOSE 7892