Gluetun and Firefox in Docker

docker-compose.yml

# Firefox Proxy Settings:
# HTTP Proxy: localhost:8888
# HTTPS Proxy: localhost:8888
# SOCKS Host: localhost:8388

services:
  gluetun:
    image: qmcgaw/gluetun
    container_name: gluetun
    cap_add:
      - NET_ADMIN
    environment:
      # some providers require to extract the opvenvpn config files: 
      # https://github.com/qdm12/gluetun-wiki/blob/main/setup/advanced/openvpn-client-certificate.md
      # https://github.com/qdm12/gluetun-wiki/blob/main/setup/advanced/openvpn-client-encrypted-key.md
      - VPN_SERVICE_PROVIDER=
      - OPENVPN_USER=
      - OPENVPN_PASSWORD=
      # Optional: Specify the country and/or city
      - SERVICE_COUNTRIES=
      - HTTPPROXY=on
    ports:
      - 8888:8888/tcp # For Gluetun's built-in HTTP proxy (if needed)
      - 8388:8388/tcp # For Gluetun's built-in Shadowsocks server (if needed)
      - 8388:8388/udp # For Gluetun's built-in Shadowsocks server (if needed)
      - 3000:3000 # Firefox
      #- 3001:3001 # Firefox VNC
    volumes:
      - ./gluetun/config:/gluetun
    restart: unless-stopped

  browser:
    image: lscr.io/linuxserver/firefox:latest
    container_name: browser
    environment:
      - PUID=1000
      - PGID=1000
      - TZ=America/New_York
      - HTTP_PROXY=http://localhost:8888 # Set the HTTP proxy to Gluetun
      - HTTPS_PROXY=http://localhost:8888 # Set the HTTPS proxy to Gluetun
    network_mode: "service:gluetun"
    shm_size: "1gb"
    volumes:
      - ./firefox-docker/config:/config:rw
      - ./firefox-docker/downloads:/downloads:rw
    restart: unless-stopped