An free and open-source software to start workloads on demand and stop them after a period of inactivity.

Either because you don't want to overload your raspberry pi or because your QA environment gets used only once a week and wastes resources by keeping your workloads up and running, Sablier is a project that might interest you.

• Supports the following providers
  • Docker
  • Docker Swarm
  • Kubernetes
• Supports multiple reverse proxies
  • Nginx
  • Traefik
  • Caddy
• Scale up your workload automatically upon the first request
  • with a themable waiting page
  • with a hanging request (hang until service is up)
• Scale your workload to zero automatically after a period of inactivity

See the documentation here