Remove custom IP fetching (#10954)

Co-authored-by: CanbiZ (MickLesk) <47820557+MickLesk@users.noreply.github.com>

ct/n8n.sh

@@ -29,13 +29,12 @@ function update_script() {
   fi
   if [ ! -f /opt/n8n.env ]; then
     sed -i 's|^Environment="N8N_SECURE_COOKIE=false"$|EnvironmentFile=/opt/n8n.env|' /etc/systemd/system/n8n.service
-    HOST_IP=$(hostname -I | awk '{print $1}')
     mkdir -p /opt
     cat <<EOF >/opt/n8n.env
 N8N_SECURE_COOKIE=false
 N8N_PORT=5678
 N8N_PROTOCOL=http
-N8N_HOST=$HOST_IP
+N8N_HOST=$LOCAL_IP
 EOF
   fi
   NODE_VERSION="22" setup_nodejs