[Help]: Upgrading via Portainer to v6

[compumark]

Controller Version

5.15.24.18

Describe Your Issue or Question

I am current running the Version 5.15.24.18 on my Synology DS923+ via Portainer Stack deployed.
I read through the upgrade document here: https://github.com/mbentley/docker-omada-controller/tree/master/mongodb_upgrade#execute-the-upgrade

But I missed a detailed instruction to safely run it via Portainer. Before starting trial and error, I wanted to ask if someone has executed this and has a tutorial how to safely execute the upgrade to v6. Any help is appreciated.

Expected Behavior

upgrade to v6 without dataloss on portainer

Steps to Reproduce

need steps to safe migrate to v6 via Portainer

How You're Launching the Container

version: "3.9"
services:
  omada:
    image: mbentley/omada-controller
    container_name: omada
    security_opt:
      - no-new-privileges:true
    restart: on-failure:5
    network_mode: host
    volumes:
      - /volume1/docker/omada/data:/opt/tplink/EAPController/data:rw
      - /volume1/docker/omada/logs:/opt/tplink/EAPController/logs:rw
      - /volume1/docker/omada/work:/opt/tplink/EAPController/work:rw
    environment:
      TZ: Europe/Vienna
      MANAGE_HTTP_PORT: 8088
      MANAGE_HTTPS_PORT: 8043
      PORTAL_HTTP_PORT: 8088
      PORTAL_HTTPS_PORT: 8043
      SHOW_SERVER_LOGS: true
      SHOW_MONGODB_LOGS: false
      SSL_CERT_NAME: "tls.crt"
      SSL_KEY_NAME: "tls.key"
      PUID: 1026
      PGID: 100

Container Logs

n/a

MongoDB Logs

No response

Additional Context

No response