Yeah, I was a bit disappointed with the upgrade methods for InfluxDB, but I've noticed the leak of the _internal DB https://github.com/influxdata/influxdb/issues/5290. I'll probably upgrade soon.

The motivation to put this into an image was that other teams wanted to deploy this and they'll probably end up on the same host so I was looking for isolation of the databases (mainly to protect our team's working dashboard from other fiddlers).