title: Looking for a way to run a workflow on all self-hosted agents in a pool for Github actions
body: <p>I’m trying to run a maintenance workflow on all agents.
  It’s a cleaning job like “docker system prune”. I wish it runs on all self-host agents (about 12 agents) weekly on Sunday night.
  I noticed that workflows can run with on schedule event. This is great.
  But I didn’t find a way to make all self-hosted agents to run the workflow. Any suggestions?</p>