Try this:
plex:
image: ghcr.io/linuxserver/plex
container_name: plex
network_mode: host
runtime: nvidia
environment:
- PUID=1000
- PGID=1000
- VERSION=docker
- UMASK_SET=022 #optional
- PLEX_CLAIM= #optional
- NVIDIA_VISIBLE_DEVICES=all
volumes:
- /var/lib/plexmediaserver:/config
- /media:/media
- /transcoder:/transcoder
- /etc/resolv.conf:/etc/resolv.conf
restart: unless-stopped