diff --git a/Dockerfile b/Dockerfile
index f1eed13..41c7244 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -4,7 +4,7 @@ ENV TZ=Asia/Shanghai \
 
 ADD . /app
 
-RUN  sed -i "s@http://.*archive.ubuntu.com@https://mirrors.tuna.tsinghua.edu.cn@g" /etc/apt/sources.list& \
+RUN  sed -i "s@http://.*archive.ubuntu.com@https://mirrors.tuna.tsinghua.edu.cn@g" /etc/apt/sources.list \
     && sed -i "s@http://.*security.ubuntu.com@https://mirrors.tuna.tsinghua.edu.cn@g" /etc/apt/sources.list \
     && ln -sf /usr/share/zoneinfo/Asia/Shanghai /etc/localtime  && echo 'Asia/Shanghai' > /etc/timezone\
     && apt update && apt install git python3 npm make curl wget -y \