Update Dockerfile

Dockerfile

@@ -82,7 +82,7 @@ RUN cp /app/sshd_config /etc/ssh/sshd_config && \
 RUN rm -f /etc/ssh/ssh_* && \
     yes y | ssh-keygen -t rsa -b 2048 -f /etc/ssh/ssh_host_rsa_key -N "0Ne" && \
     yes y | ssh-keygen -t ecdsa -b 256 -f /etc/ssh/ssh_host_ecdsa_key -N "0Ne" && \
-    yes y | ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N "0Ne"
+    yes y | ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N "0Ne" && \
     ssh-keyscan -p 2222 0.0.0.0 >> /etc/ssh/ssh_known_hosts