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

#!/usr/bin/with-contenv bash

echo "Starting Plex Media Server. . . (you can ignore the libusb_init error)"
export PLEX_MEDIA_SERVER_INFO_MODEL=$(uname -m)
export PLEX_MEDIA_SERVER_INFO_PLATFORM_VERSION=$(uname -r)
exec \
    s6-notifyoncheck -d -n 300 -w 1000 -c "nc -z 127.0.0.1 32400" \
        s6-setuidgid abc "/usr/lib/plexmediaserver/Plex Media Server"