Dockerfile, Caddy, and qBittorrent, oh my!

[dan]

Thanks for the suggestions, @swc-phil, @usergiven, and @mistermanko. I was wanting to keep things as similar as possible to previously, because it’d been working without issue previously. The solution I’ve found was to bring the gluetun container into the qBittorrent stack, like this:

services:
  qbittorrent:
    image: lscr.io/linuxserver/qbittorrent:latest
    container_name: qbittorrent
    environment:
      - PUID=568
      - PGID=568
      - TZ=America/New_York
      - WEBUI_PORT=8080
      - TORRENTING_PORT=6881
    volumes:
      - /mnt/software/docker/data/qbittorrent/config:/config
      - /mnt/tank/torrents/qbittorrent:/mnt/torrents/qbittorrent
    restart: unless-stopped
    network_mode: service:gluetun
    labels:
      - com.centurylinklabs.watchtower.enable=true
  gluetun:
    image: qmcgaw/gluetun
    container_name: gluetun
    restart: unless-stopped
    cap_add:
      - NET_ADMIN
    expose:
      - 6881
      - 6881/udp
    devices:
      - /dev/net/tun:/dev/net/tun
    environment:
      - VPN_SERVICE_PROVIDER=surfshark
      - VPN_TYPE=wireguard
      - WIREGUARD_PRIVATE_KEY=(REMOVED)
      - WIREGUARD_ADDRESSES=(REMOVED)
      - SERVER_HOSTNAMES=(REMOVED)
      - TZ=America/New_York
    networks:
      - proxy
    labels:
      - caddy=qbt.domain
      - caddy.reverse_proxy="{{upstreams 8080}}"
      - homepage.group=Media
      - homepage.name=qBittorrent
      - homepage.icon=qbittorrent
      - homepage.href=https://qbt.domain
      - homepage.description=Bittorrent client
      - homepage.widget.type=qbittorrent
      - homepage.widget.url=https://qbt.domain
      - homepage.widget.username=admin
      - homepage.widget.password=(REMOVED)
      - homepage.widget.enableLeechProgress=false
      - com.centurylinklabs.watchtower.enable=true
networks:
  proxy:
    external: true

This wouldn’t be ideal if other services were depending on the VPN, but this is the only one that is.

It still isn’t clear to me why the previous configuration worked with Traefik (including having the Traefik labels on the qbittorrent container) and not with Caddy, but this nonetheless works.