docker-plex/root/etc/cont-init.d/40-chown-files

#!/usr/bin/with-contenv bash

# check for preferences file and if not found, exit out
if [ ! -e "/config/Library/Application Support/Plex Media Server/Preferences.xml" ]; then
  mkdir -p /config/Library
  chown abc:abc \
	/config/Library
  exit 0
fi

if [ ! "$(stat -c %U /config/Library)" = "abc" ]; then
  echo "Change in ownership detected, please be patient while we chown existing files"
  echo "This could take some time"
  chown abc:abc -R \
	/config/Library
fi