Minimal template to map an app to a public URL via Traefik

[dannyblaker]

Given a stand-alone docker instance of Portainer CE + Traefik and pointed to the domain portainer.example.com having followed the precise steps in the official guide...

What minimum modifications are necessary to deploy the following basic application, and map it to the url example.com/cyberchef

version: "3"

services:
  cyberchef:
    image: mpepping/cyberchef
    ports:
      - 8000:8000
    restart: always