Do you use docker compose?

https://www.youtube.com/watch?v=xbSfaKwyfXE&t=33s

version: '3.7'
services:
  gluetun:
    image: qmcgaw/gluetun:latest
    container_name: vpn
    cap_add:
      - NET_ADMIN
    ports:
      - '8080:8080'
    environment:
      - VPNSP=protonvpn
      - VPN_TYPE=openvpn
      - OPENVPN_USER=xxxxxx
      - OPENVPN_PASSWORD=xxxxxx
      - REGION=United States
    restart: unless-stopped
  qbittorrent:
    container_name: qbittorrent
    image: cr.hotio.dev/hotio/qbittorrent:latest
    network_mode: 'container:vpn'
    environment:
      - PUID=1000
      - PGID=1000
      - UMASK=002
      - TZ=America/New_York
    volumes:
      - '/home/xxxx/qbt:/config'
      - '/home/xxxx/INCOMING:/downloads'
    restart: unless-stopped

That should get your started