Update Dockerfile

Dockerfile

@@ -3,9 +3,15 @@ FROM ubuntu:22.04
 ENV DEBIAN_FRONTEND=noninteractive
 
 USER root
-RUN apt-get install openssh-server openssh-client openssh
 
-RUN chkconfig sshd on
-RUN service sshd start
+RUN apt-get update && apt-get install -y \
+    openssh-server openssh-client \
+    && rm -rf /var/lib/apt/lists/*
 
-EXPOSE 7860
+RUN mkdir /var/run/sshd
+RUN echo 'root:TudouBiancheng-Fan-Club' | chpasswd
+RUN sed -i 's/#PermitRootLogin prohibit-password/PermitRootLogin yes/' /etc/ssh/sshd_config
+
+EXPOSE 7860
+
+CMD ["/usr/sbin/sshd", "-D"]