Adds support for .deb package builder in Traefik

[robertoberto]

Implements a Dockerfile and adjusts the Makefile for automated .deb package building in Traefik

This commit introduces a Dockerfile configured for Ubuntu 24, enhancing the environment setup and handling of environment variables for the automated construction of .deb packages. Significant improvements and additions include:

• Integration of logrotate to manage log files.
• Provision of a traefik.yml example that redirects traffic from port 80 to 8000.
• Installation instructions for setting up Traefik as a standalone service on Ubuntu without Docker.
• Implementation of a systemd service configuration for robust service management, featuring:
  • Running as user www-data to enhance security.
  • AmbientCapabilities=CAP_NET_BIND_SERVICE to allow binding to well-known ports without elevated privileges.
  • Restart=always to ensure the service restarts automatically if it crashes.
  • Enhanced filesystem and service isolation with ProtectSystem=strict, PrivateTmp=true, ProtectHome=true, PrivateDevices=true, ProtectKernelTunables=true, ProtectControlGroups=true.
  • Specified ReadWritePaths=/etc/traefik/acme.json /var/log/traefik/ to restrict read-write permissions to essential paths.
• Configuration to run Traefik under the www-data user for improved security and compliance.

These enhancements are aimed at solidifying Traefik's deployment as a secure and reliable reverse proxy and load balancer on Ubuntu systems.

Can be enhanced to support other debian and ubuntu releases.