a81c3453b5
This commit enhances the Socket.IO deployment documentation by adding a new section on configuring the systemd service to run as `www-data`, ensuring proper permissions for SSL certificate access. It also updates the fixCertPermissions.sh script to handle cases where the service user is not defined or is set to `nobody`, defaulting to `www-data` and verifying its existence. These changes improve the overall security and functionality of the deployment process.