Docker instance not being recognized as a server can't add media libraries etc

Plex Media Server
,
7

In my command I ran:

docker network create --gateway 192.168.1.1 --subnet  192.168.1.0/24 physical

and then changed my docker-compose to look like this:

version: "2.1"
services:
  plex:
    image: plexinc/pms-docker
    container_name: plex
    volumes:
      - /appdata/plex:/config
      - /library/Movies:/Movies
      - /library/Classes:/Classes
      - /library/TV\ Shows:/TV\ Shows
    environment:
      - PUID=${PUID}
      - PGID=${PGID}
      - TZ=America/Chicago
    networks:
      physical:
        ipv4_address: 192.168.1.120
    hostname: dockerplex
    restart: unless-stopped
networks:
  physical:
    external: true

But this ends up kicking me off the network. I want the Plex box to appear as another computer on the network and that is where I’m having issues.