Metrics in grafana dashboards replace * for garbage string

[hghmn]

Description

When the grafana container is created, several of the metrics from the loaded dashboards appear to have the same string replacing what should be the * character

Steps to reproduce the issue

1. Create a dashboard that has a metric with the * character
2. Start the container in Docker with the enclosing dashboards folder mounted
3. Open the Grafana dashboard to view the metric

Describe the results you received

The metric expression, after loaded into grafana:

100 - (avg by (cpu) (irate(node_cpu{mode=\"idle\", instance=~\"$server\"}[5m])) bin boot dev docker-entrypoint.sh etc home lib lib64 media mnt opt proc root run run.sh sbin srv sys tmp usr var 100)

Describe the results you expected

The metric expression, before loaded into grafana:

100 - (avg by (cpu) (irate(node_cpu{mode=\"idle\", instance=~\"$server\"}[5m])) * 100)