Disable the SSH server is 'PORT_SSH' variable is set to an empty string

overlay/etc/cont-init.d/20-configre_sshd.sh

@@ -1,14 +1,21 @@
 
-# Generate new SSH host keys if they dont exist
-if [[ ! -f /etc/ssh/ssh_host_rsa_key ]]; then
-    echo "**** Generating SSH keys ****";
-    /usr/bin/ssh-keygen -A
+echo "**** Configure SSH server ****"
+
+if [[ "X${PORT_SSH:-}" != "X" ]]; then
+    # Generate new SSH host keys if they dont exist
+    if [[ ! -f /etc/ssh/ssh_host_rsa_key ]]; then
+        echo "**** Generating SSH keys ****";
+        /usr/bin/ssh-keygen -A
+    fi
+    mkdir -p /run/sshd
+    chmod 744 /run/sshd
+
+    echo "Set port to '${PORT_SSH}'"
+    sed -i "s|^#   Port 22.*$|Port ${PORT_SSH}|" /etc/ssh/ssh_config
+else
+    echo "Disable SSH server"
+    # Disable supervisord script
+    sed -i 's|^autostart.*=.*$|autostart=false|' /etc/supervisor.d/sshd.ini
 fi
-mkdir -p /run/sshd
-chmod 744 /run/sshd
-
-echo "**** Configure SSH service ****";
-
-sed -i "s|^#   Port 22.*$|Port ${PORT_SSH}|" /etc/ssh/ssh_config
 
 echo "DONE"