Copying plugin configs

I need to configure plugin configs e.g. /config/plugins/viaversion/config.yml but thats impossible with current mount volumes. Using /config volume would be best way to do that, but unfortunately it does not copy files recursively. Is there any other way to copy these configs from volume mounts?

Start by reproducing the /config volume behavior with /config/plugins/viaversion/config.yml mounted, then inspect the image's volume initialization and copy behavior. The work is done when plugin configuration files can be copied recursively from mounted volumes without losing existing configuration.

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