build(Dockerfile): 更新apt源为清华镜像并升级到trixie版本

将Dockerfile中的apt源从阿里云镜像更改为清华镜像，同时将Debian版本从bookworm升级到trixie，并添加non-free-firmware组件支持

Dockerfile.backend

@@ -11,9 +11,9 @@ ENV DEBIAN_FRONTEND=noninteractive \
     PIP_TRUSTED_HOST=pypi.tuna.tsinghua.edu.cn
 
 RUN rm -f /etc/apt/sources.list.d/*.list /etc/apt/sources.list.d/*.sources && \
-    echo 'deb http://mirrors.aliyun.com/debian/ bookworm main non-free contrib' > /etc/apt/sources.list && \
-    echo 'deb http://mirrors.aliyun.com/debian/ bookworm-updates main non-free contrib' >> /etc/apt/sources.list && \
-    echo 'deb http://mirrors.aliyun.com/debian-security/ bookworm-security main non-free contrib' >> /etc/apt/sources.list && \
+    echo 'deb http://mirrors.tuna.tsinghua.edu.cn/debian/ trixie main non-free contrib non-free-firmware' > /etc/apt/sources.list && \
+    echo 'deb http://mirrors.tuna.tsinghua.edu.cn/debian/ trixie-updates main non-free contrib non-free-firmware' >> /etc/apt/sources.list && \
+    echo 'deb http://mirrors.tuna.tsinghua.edu.cn/debian-security/ trixie-security main non-free contrib non-free-firmware' >> /etc/apt/sources.list && \
     apt-get update && apt-get install -y --no-install-recommends \
     build-essential \
     gcc \