404 page not found while reverse proxy to non Docker website

Traefik Traefik v2 (latest)
,
1

Hello all,

I am still a complete newbie when it comes to Traefik (v 2.3). Via Youtube (https://youtu.be/g2aIYI7Rxas) I found a tutorial how to set up a reverse proxy connection to a non Docker environment (e.g. to a LXC container under Proxmox or so...) so that Traefik can pull a certificate for this external host via Let's Encrypt and then make this service available on the Internet. Unfortunately I always get a 404 error message.

Additionally I would be interested in how to remove a Let's Encrypt certificate in Traefik and renew it via force.

Enclosed my traefik.yml and middleware.yml

traefik.yml:

##START
global:
  checkNewVersion: true
  sendAnonymousUsage: true

api:
  dashboard: true
  debug: true

log:
### Default Level ist ERROR. Alternative Log-Level lauten (je weiter rechts desto mehr Info) PANIC, FATAL, ERROR, WARN, INFO, DEBUG
  level: DEBUG
  filePath: "/traefik.log"

entryPoints:
  http:
    address: "0.0.0.0:80"
  https:
    address: "0.0.0.0:443"

providers:
  docker:
    endpoint: "unix:///var/run/docker.sock"
    network: internet
    exposedByDefault: false

  file:
    filename: /middleware.yml

certificatesResolvers:
  le:
    acme:
      email: cert@examle.com
      storage: acme.json
      tlsChallenge: {}
##EOF

middleware.yml:

##START
http:
  middlewares:
    https-redirect:
      redirectScheme:
        scheme: https

    default-headers:
      headers:
        CustomFrameOptionsValue: "SAMEORIGIN"
        sslRedirect: true
        browserXssFilter: true
        contentTypeNosniff: true
        forceSTSHeader: true
        stsSeconds: 315360000
        stsIncludeSubdomains: true
        stsPreload: true


# Beispiel fuer externe Dienste
  routers:
    dokuwiki: # Tausche den Namen gegen etwas sprechendes aus
      entryPoints:
        - https
      rule: "Host(`wiki.example.com`)"
      service: "dokuwiki" # Den Namen am besten   hnlich zu dem oben setzen
      tls:
        certresolver: le

    nextcloud:
      entryPoints:
        - https
      rule: "Host(`cloud.example.com`)"
      service: "nextcloud"
      tls:
        certresolver: le



  services:
    dokuwiki: # Ich verwende hier den gleiche Namen wie bei routers
      loadBalancer:
        servers:
          - url: "http://192.168.192.171" # Auf die richtige URL anpassen. Ggf. nat  rlich mir Port

    nextcloud:
      loadBalancer:
        servers:
          - url: "https://192.168.192.172"




    matomo-headers:
      headers:
        sslRedirect: true
        browserXssFilter: true
        contentTypeNosniff: true
        forceSTSHeader: true
        stsSeconds: 315360000
        stsIncludeSubdomains: true
        stsPreload: true

tls:
  options:
    myTLSOptions:
       minVersion: VersionTLS12





##EOF

Am grateful for any suggestion

kind regards H-BLOGX