diff --git a/server/dockerconfs/Dockerfile-common-normal b/server/dockerconfs/Dockerfile-common-normal
index 0b0a7c83f..1c8355e70 100644
--- a/server/dockerconfs/Dockerfile-common-normal
+++ b/server/dockerconfs/Dockerfile-common-normal
@@ -6,6 +6,10 @@ FROM python:3.7.12-slim
 ARG EXTRA_TOOLS="gnupg curl wget jq vim-tiny net-tools procps python3-dev default-libmysqlclient-dev locales inotify-tools gcc subversion git telnet iputils-ping vim openssh-client"
 
 RUN set -ex && cd / \
+ && cat /etc/apt/sources.list\
+ && mv /etc/apt/sources.list /etc/apt/sources.list.backup\
+ && echo "deb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye main contrib non-free\ndeb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-updates main contrib non-free\ndeb https://mirrors.tuna.tsinghua.edu.cn/debian/ bullseye-backports main contrib non-free\ndeb https://mirrors.tuna.tsinghua.edu.cn/debian-security bullseye-security main contrib non-free\n"> /etc/apt/sources.list\
+ && cat /etc/apt/sources.list\
 && apt-get update \
 && apt-get install -y --no-install-recommends $EXTRA_TOOLS \
 && apt-get update \
@@ -23,5 +27,7 @@ WORKDIR /var/www/django/codedog
 COPY . .
 
 RUN mkdir -p log/ && \
+ pip install -i https://pypi.tuna.tsinghua.edu.cn/simple pip -U && \
+ pip config set global.index-url https://pypi.tuna.tsinghua.edu.cn/simple && \
 pip install -U setuptools pip && \
 pip install -r requirements.txt
</div><div class="naked_ctrl">
<form action="/index.cgi/contrast" method="get" name="gate">
<p><a href="http://altstyle.alfasado.net">AltStyle</a> によって変換されたページ <a href="https://github.com/Tencent/CodeAnalysis/compare/main...we-xtech:CodeAnalysis:main.diff">(-&gt;オリジナル)</a>
/ <label>アドレス: <input type="text" name="naked_post_url" value="https://github.com/Tencent/CodeAnalysis/compare/main...we-xtech:CodeAnalysis:main.diff" size="22" /></label> <label>モード: <select name="naked_post_mode">
<option value="default">デフォルト</option>
<option value="speech">音声ブラウザ</option>
<option value="ruby">ルビ付き</option>
<option value="contrast" selected="selected">配色反転</option>
<option value="larger-text">文字拡大</option>
<option value="mobile">モバイル</option>
</select>
<input type="submit" value="表示" />
</p>
</form>
</div>