That is true. Here is what worked for me.
- Using bitnami discourse chart
- Override dockerfile for bitnami postgres and install vector as root
- at the startup of postgres ran an init script to make the
discourseuser the owner of vector - rest(including installing of plugin) is taken care by the bitnami chart
I learned this the hard way. I wish there were some documentation around this. The plugin docs should mention some prerequisite.