start: do not print the root password when specified in `ROOT_PASSWORD` ENV variable

start

@@ -34,10 +34,12 @@ rm -rf /etc/webmin
 ln -sf /data/webmin/etc /etc/webmin
 
 if [ "${WEBMIN_ENABLED}" == "true" ]; then
-  # set root password so that we can login via webmin
-  ROOT_PASSWORD=${ROOT_PASSWORD:-$(pwgen -c -n -1 12)}
+  if [ -z "${ROOT_PASSWORD}" ]; then
+    # generate a random password for root
+    ROOT_PASSWORD=$(pwgen -c -n -1 12)
+    echo User: root Password: $ROOT_PASSWORD
+  fi
   echo "root:$ROOT_PASSWORD" | chpasswd
-  echo User: root Password: $ROOT_PASSWORD
 
   echo "Starting webmin..."
   /etc/init.d/webmin start