feat: update node-exporter example for smoother configuration

GreptimeTeam / demo-scene

👾Scripts and samples to support Greptime Demos and Talks.

https://greptime.com

Apache License 2.0

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Open sunng87 opened 1 day ago

sunng87 commented 1 day ago

part of #52

Use environment variables to configure prometheus and start prometheus/node exporter with docker compose by default.