换取国内镜像源加速apt-get

backend/Dockerfile

@@ -4,6 +4,10 @@ FROM docker.m.daocloud.io/library/python:3.10-slim
 
 WORKDIR /app
 
+# 换 Debian 国内镜像源（加速 apt-get）
+RUN sed -i 's|deb.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list.d/debian.sources && \
+    sed -i 's|security.debian.org|mirrors.aliyun.com|g' /etc/apt/sources.list.d/debian.sources
+
 RUN apt-get update && apt-get install -y git openssh-client sshpass && rm -rf /var/lib/apt/lists/*
 
 COPY requirements.txt .