В корне создаём папку «nextcloud» и файлы файлы «docker-compose.yml»

mkdir nextcloud
touch nextcloud/docker-compose.yml

добавляем содержимое в docker-compose.yml cat > nextcloud/docker-compose.yml

version: "3"
services:
  nextcloud-postgres:
    image: postgres
    container_name: nextcloud-postgres
    restart: unless-stopped
    environment:
      POSTGRES_DB: nextcloud
      POSTGRES_USER: nextcloud
      POSTGRES_PASSWORD: (youpassword)
    volumes:
      - ./database:/var/lib/postgresql/data
    healthcheck:
      test: [ "CMD", "pg_isready", "-q", "-d", "nextcloud", "-U", "nextcloud" ]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 60s

  nextcloud-redis:
    image: redis
    container_name: nextcloud-redis
    command: ["redis-server", "--requirepass", "(youpassword)"]
    healthcheck:
      test: ["CMD", "redis-cli", "ping"]
      interval: 10s
      timeout: 5s
      retries: 3
      start_period: 60s
    restart: unless-stopped

  nextcloud-app:
    image: nextcloud
    container_name: nextcloud-app
    restart: unless-stopped
    environment:
      NEXTCLOUD_TRUSTED_DOMAINS: nextcloud.(youdomaine)
      OVERWRITECLIURL: https://nextcloud.(youdomaine)
      OVERWRITEPROTOCOL: https
      OVERWRITEHOST: nextcloud.(youdomaine)
      TZ: Europe/Astrakhan
      POSTGRES_HOST: nextcloud-postgres
      POSTGRES_DB: nextcloud
      POSTGRES_USER: nextcloud
      POSTGRES_PASSWORD: (youpassword)
      REDIS_HOST: nextcloud-redis
      REDIS_HOST_PASSWORD: (youpassword)
      NEXTCLOUD_ADMIN_USER: nextcloud_admin
      NEXTCLOUD_ADMIN_PASSWORD: (youpassword)
    volumes:
      - ./app:/var/www/html
    depends_on:
      nextcloud-postgres:
        condition: service_healthy
      nextcloud-redis:
        condition: service_healthy
    labels:
      - traefik.enable=true
      - traefik.http.middlewares.nextcloud-app_https.redirectscheme.scheme=https
      - traefik.http.routers.nextcloud-app.entrypoints=web
      - traefik.http.routers.nextcloud-app.middlewares=nextcloud-app_https@docker
      - traefik.http.routers.nextcloud-app.rule=Host(`nextcloud.(youdomaine)`)
      - traefik.http.routers.nextcloud-app_https.entrypoints=websecure
      - traefik.http.routers.nextcloud-app_https.rule=Host(`nextcloud.(youdomaine)`)
      - traefik.http.routers.nextcloud-app_https.tls=true
      - traefik.http.services.nextcloud-app.loadbalancer.server.port=80
      - traefik.http.routers.nextcloud-app_https.tls.certresolver=le

networks:
  default:
    external:
      name: traefik_network

а так же добавляем фаил с параметрами cat > nextcloud/nextcloud.ini upload_max_filesize=8G post_max_size=8G memory_limit=2G max_input_time 7200 max_execution_time 7200

замените {yourdomain} на свой домен так же (youpassword) на свой пароль.