change ssh-keygen commands for add default host keys

Author: eshizhan

files/entrypoint

@@ -71,15 +71,7 @@ if [ ! -f "$userConfFinalPath" ]; then
 
     # Generate unique ssh keys for this container, if needed
     if [ ! -f /etc/ssh/ssh_host_ed25519_key ]; then
-        ssh-keygen -t ed25519 -f /etc/ssh/ssh_host_ed25519_key -N ''
-    fi
-    if [ ! -f /etc/ssh/ssh_host_rsa_key ]; then
-        ssh-keygen -t rsa -b 4096 -f /etc/ssh/ssh_host_rsa_key -N ''
-    fi
-
-    # Restrict access from other users
-    chmod 600 /etc/ssh/ssh_host_ed25519_key || true
-    chmod 600 /etc/ssh/ssh_host_rsa_key || true
+    ssh-keygen -A
 fi
 
 # Source custom scripts, if any

files/sshd_config

@@ -3,6 +3,7 @@
 Protocol 2
 HostKey /etc/ssh/ssh_host_ed25519_key
 HostKey /etc/ssh/ssh_host_rsa_key
+HostKey /etc/ssh/ssh_host_ecdsa_key
 
 # Faster connection
 # See: https://github.com/atmoz/sftp/issues/11