docker-plex/root/etc/s6-overlay/s6-rc.d/init-plex-chown/run

#!/usr/bin/with-contenv bash
# shellcheck shell=bash

mkdir -p /run/plex-temp

# create folders
if [[ ! -d "${PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR}" ]]; then
    mkdir -p "${PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR}"
    lsiown -R abc:abc /config
fi

# check Library permissions
PUID=${PUID:-911}
if [[ ! "$(stat -c %u /config/Library)" == "${PUID}" ]]; then
    echo "Change in ownership detected, please be patient while we chown existing files"
    echo "This could take some time"
    lsiown -R abc:abc \
        /config/Library
fi

# remove plex pid after unclean stop
if [[ -f "/config/Library/Application Support/Plex Media Server/plexmediaserver.pid" ]]; then
    rm -f "/config/Library/Application Support/Plex Media Server/plexmediaserver.pid"
fi

# set permissions on Plex Transcoder Temp Directory
PLEX_MEDIA_SERVER_PREFERENCES="${PLEX_MEDIA_SERVER_APPLICATION_SUPPORT_DIR}/Plex Media Server/Preferences.xml"
if [[ -f "${PLEX_MEDIA_SERVER_PREFERENCES}" ]]; then
    TranscoderTempDirectory='\bTranscoderTempDirectory="([^"]+)"'
    while IFS= read -r line; do
        if [[ ${line} =~ ${TranscoderTempDirectory} ]] && [[ -d "${BASH_REMATCH[1]}" ]]; then
            echo "Setting permissions on ${BASH_REMATCH[1]}"
            lsiown -R abc:abc "${BASH_REMATCH[1]}"
        fi
    done <"${PLEX_MEDIA_SERVER_PREFERENCES}"
fi

# permissions (non-recursive) on config root and folders
lsiown abc:abc \
    /run/plex-temp \
    /config \
    /config/*