Move to traefik

Traefik Traefik v2 (latest)
1

I got a running revers-proxy with an acme companion for https.
But i want to move to use trafik instead, because somehow the used image repo paths seems to be dead and I got issues how to solve basic_auth for a subfolder.

This is my docker-compose.yml for the reverse-proxy:

version: '3.7'

services:

    reverse-proxy:
        image: 'nginxproxy/nginx-proxy:latest'
        container_name: 'reverse-proxy'
        volumes:
            - 'html:/usr/share/nginx/html'
            - 'dhparam:/etc/nginx/dhparam'
            - 'vhost:/etc/nginx/vhost.d'
            - 'certs:/etc/nginx/certs'
            - '/run/docker.sock:/tmp/docker.sock:ro'
        restart: 'always'
        networks: 
            - 'net'
        ports:
            - '80:80'
            - '443:443'
    letsencrypt:
        image: 'nginxproxy/acme-companion:latest'
        container_name: 'letsencrypt-helper'
        volumes:
            - 'html:/usr/share/nginx/html'
            - 'dhparam:/etc/nginx/dhparam'
            - 'vhost:/etc/nginx/vhost.d'
            - 'certs:/etc/nginx/certs'
            - 'acme:/etc/acme.sh'
            - '/run/docker.sock:/var/run/docker.sock:ro'
        environment:
            NGINX_PROXY_CONTAINER: 'reverse-proxy'
            ACME_EMAIL: me@mail.com
            ACME_CA_URI: 'https://acme.zerossl.com/v2/DV90'
        restart: 'always'
        depends_on:
            - 'reverse-proxy'
        networks: 
            - 'net'
volumes:
  certs:
  html:
  vhost:
  dhparam:
  acme:

networks:
  net:
    external: true

and this is i.e. of a running client docker-compose.yml

version: "3.3"

services:
    mytool:
        image: "me/frontend-prod:latest"
        container_name: "myfrontendtool"
        restart: unless-stopped
        environment:
            APP_ENV: production
            VIRTUAL_HOST: "my.domain.com"
            VIRTUAL_PORT: 80
            LETSENCRYPT_HOST: "my.domain.com"
            LETSENCRYPT_EMAIL: me@mail.com
        networks:
           - net
        volumes:
          - ./:/app

networks:
    net:
      external: true

My question is: How can i transfer this composers to traefik composers?
It's really hard to get this out of the docs here. I'm missing such an example.
Appreciating any hints.
Thx in adanvce.