diff --git a/src/test/resources/sshd/Dockerfile b/src/test/resources/sshd/Dockerfile
index f8adff7..81b4f7d 100644
--- a/src/test/resources/sshd/Dockerfile
+++ b/src/test/resources/sshd/Dockerfile
@@ -1,5 +1,5 @@
 FROM linuxserver/openssh-server:9.3_p2-r1-ls147
-RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.aliyun.com/g' /etc/apk/repositories \
+RUN sed -i 's/dl-cdn.alpinelinux.org/mirrors.tuna.tsinghua.edu.cn/g' /etc/apk/repositories \
     && apk update && apk add wget tmux gcc zip p7zip g++ git make zsh htop stress-ng inetutils-telnet xclock xcalc xorg-server xinit && wget https://ohse.de/uwe/releases/lrzsz-0.12.20.tar.gz \
     && tar -xf lrzsz-0.12.20.tar.gz && cd lrzsz-0.12.20 && ./configure && make && make install \
     && ln -s /usr/local/bin/lrz /usr/local/bin/rz && ln -s /usr/local/bin/lsz /usr/local/bin/sz
@@ -7,3 +7,6 @@ RUN sed -i 's/#AllowAgentForwarding yes/AllowAgentForwarding yes/g' /etc/ssh/ssh
 RUN sed -i 's/AllowTcpForwarding no/AllowTcpForwarding yes/g' /etc/ssh/sshd_config
 RUN sed -i 's/GatewayPorts no/GatewayPorts yes/g' /etc/ssh/sshd_config
 RUN sed -i 's/X11Forwarding no/X11Forwarding yes/g' /etc/ssh/sshd_config
+
+# docker build -t sshd .
+# docker run --rm -it -e SUDO_ACCESS=true -e PASSWORD_ACCESS=true -e USER_PASSWORD=123456 -p 2222:2222 sshd
\ No newline at end of file