On commence par du bash :

$ nmap -sT 192.168.1.32
Starting Nmap 7.95 ( https://nmap.org ) at 2025-06-25 10:00 CEST
Nmap scan report for NAS-N150.lan (192.168.1.32)
Host is up (0.00021s latency).
Not shown: 991 closed tcp ports (conn-refused)
PORT     STATE    SERVICE
..
8080/tcp filtered http-proxy
8090/tcp open  opsmessaging
..

Puis du yaml :

---
version: "2.1"
services:
  nextcloud:
    image: linuxserver/nextcloud
    container_name: nextcloud2023
    environment:
      - PUID=997
      - PGID=100
      - TZ=Europe/Paris
    volumes:
      - /srv/dev-disk-by-label-DATA/AppData/Nextcloud/config:/config
      - /srv/dev-disk-by-label-DATA/AppData/Nextcloud/data:/data
    ports:
      - 443:443
    depends_on:
      - mariadb
    restart: unless-stopped
  mariadb:
    image: linuxserver/mariadb
    container_name: nextclouddb2023
    environment:
      - PUID=997
      - PGID=100
      - MYSQL_ROOT_PASSWORD=keepsecret
      - TZ=Europe/Paris
    volumes:
      - /srv/dev-disk-by-label-DATA/AppData/Nextclouddb:/config
    ports:
      - 3306:3306
    restart: unless-stopped
  swag:
    image: linuxserver/swag
    container_name: swag2023
    cap_add:
      - NET_ADMIN
    environment:
      - PUID=997
      - PGID=100
      - TZ=Europe/Paris
      - URL=xxx.pled.fr
      - SUBDOMAINS=nextcloud
      - VALIDATION=http
      - EMAIL=yyy@zzz
    volumes:
      - /srv/dev-disk-by-label-DATA/AppData/swag:/config
    ports:
      - 444:443
      - 81:80
    restart: unless-stopped

Et du php pour finir :

  'trusted_proxies' =>
  array (
    0 => '17Z.20.0.0/16',
  ),
  'trusted_domains' => 
  array (
    0 => '192.168.1.30:443',
    1 => 'nextcloud.xxx.pled.fr',
  ),
  'overwrite.cli.url' => 'https://nextcloud.xxx.pled.fr',
  'overwritehost' => 'nextcloud.xxx.pled.fr',
  'overwriteprotocol' => 'https',