Allow influxdb to run as a configurable uid/gid #389
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I wanted to configure
influxdbto run under a particular uid/gid (non-root) that was different than 999:999 that comes pre-configured in the container. Using--userwith docker didn't yield the desired results as it ended up not having permissions to access the data volume I supplied.With this change
entrypoint.shstill runs as root and sets things up ifINFLUXDB_RUNAS_USER_IDandINFLUXDB_RUNAS_GROUP_IDvariables are provided. After that, it usesgosu(if applicable) to correctly downgrade to the influxdb user and group (now set to the correct uid/gid) before runninginfluxdb.I did some local testing, but being my first attempt at a contribution, I'd love to hear more about how to validate this change further.