"Could not load host key: /etc/ssh/ssh_host_dsa_key" on windows

[zicjin]

> docker-compose up -d
Creating network "local-cluster_default" with the default driver
Creating hadoop-namenode ... done
Creating hadoop-datanode1 ... done

> docker logs -f hadoop-namenode
[ ok ] Starting NTP server: ntpd.
[....] Starting OpenBSD Secure Shell server: sshd/etc/ssh/sshd_config line 19: Deprecated option KeyRegenerationInterval
/etc/ssh/sshd_config line 20: Deprecated option ServerKeyBits
/etc/ssh/sshd_config line 31: Deprecated option RSAAuthentication
/etc/ssh/sshd_config line 38: Deprecated option RhostsRSAAuthentication
Could not load host key: /etc/ssh/ssh_host_dsa_key

> docker logs -f hadoop-datanode1
[ ok ] Starting NTP server: ntpd.
[....] Starting OpenBSD Secure Shell server: sshd/etc/ssh/sshd_config line 19: Deprecated option KeyRegenerationInterval
/etc/ssh/sshd_config line 20: Deprecated option ServerKeyBits
/etc/ssh/sshd_config line 31: Deprecated option RSAAuthentication
/etc/ssh/sshd_config line 38: Deprecated option RhostsRSAAuthentication
Could not load host key: /etc/ssh/ssh_host_dsa_key