https://www.digitalocean.com/community/tutorials/how-to-install-prometheus-on-ubuntu-16-04
docker run --rm quay.io/prometheus/node-exporter -h
docker run -d --net=host --pid=host --name "node-exporter" --cap-add=SYS_TIME -v "/proc:/host/proc:ro" -v "/sys:/host/sys:ro" -v "/:/rootfs:ro" quay.io/prometheus/node-exporter --path.procfs /host/proc --path.sysfs /host/proc --collector.filesystem.ignored-mount-points "^/(sys|proc|dev|host|etc)($|/)"
# with ntp collector
docker run -d --net=host --pid=host --name "node-exporter" --cap-add=SYS_TIME -v "/proc:/host/proc:ro" -v "/sys:/host/sys:ro" -v "/:/rootfs:ro" quay.io/prometheus/node-exporter --collector.ntp --collector.ntp.server="10.19.96.3" --collector.ntp.server-is-local --path.procfs /host/proc --path.sysfs /host/proc --collector.filesystem.ignored-mount-points "^/(sys|proc|dev|host|etc)($|/)"
https://github.com/prometheus/node_exporter/blob/master/docs/TIME.md