docker-plex/root/etc/services.d/plex/run

#!/usr/bin/with-contenv bash

echo "Starting Plex Media Server."
export PLEX_MEDIA_SERVER_INFO_MODEL=$(uname -m)
export PLEX_MEDIA_SERVER_INFO_PLATFORM_VERSION=$(uname -r)
exec \
	s6-setuidgid abc /bin/bash -c \
	'LD_LIBRARY_PATH=/usr/lib/plexmediaserver:/usr/lib/plexmediaserver/lib /usr/lib/plexmediaserver/Plex\ Media\ Server'