Invalid Let's Encrypt cert with Docker

Traefik Traefik v2 (latest)
,
1

Hi,

I'm new to Traefik and I'm having a hard time getting a valid Let's Encrypt cert.

The site is served fine, however the cert is always invalid, DEFAULT TRAEFIK CERT. The acme.json is populated but the Certificate property is null.

I've included my docker-compose file below... hopefully someone can point me in the right direction?

Thanks for your help!

version: "3.3"

services:

  traefik:
    image: traefik:latest
    restart: always
    container_name: traefik
    ports:
      - "80:80"
      - "8080:8080"
      - "443:443"
    command:
      - --api.insecure=true
      - --api.dashboard=true
      - --api.debug=true
      - --log.level=DEBUG
      - --providers.docker=true
      - --providers.docker.exposedbydefault=false
      #- --providers.file.filename=/dynamic.yaml
      - --providers.docker.network=web
      - --entrypoints.web.address=:80
      - --entrypoints.web-secured.address=:443
      #- --certificatesresolvers.mytlschallenge.acme.caserver=https://acme-staging-v02.api.letsencrypt.org/directory
      #- --certificatesresolvers.mytlschallenge.acme.caserver=https://acme-v02.api.letsencrypt.org/directory
      - --certificatesresolvers.mytlschallenge.acme.tlschallenge=true # <== Enable TLS-ALPN-01 to generate and renew ACME certs
      - --certificatesresolvers.mytlschallenge.acme.email=dev@mydomain.com # <== Setting email for certs
      - --certificatesresolvers.mytlschallenge.acme.storage=/letsencrypt/acme.json # <== Defining acme file to store cert information
    volumes:
      - ./letsencrypt:/letsencrypt
      - /var/run/docker.sock:/var/run/docker.sock
      - ./dynamic.yaml:/dynamic.yaml
    networks:
      - web
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.api.rule=Host(`monitor.mydomain.com`)"
      - "traefik.http.routers.api.service=api@internal"
      
  stagingapi:
    image: myimage:dev
    restart: always
    container_name: stagingapi
    ports:
      - 5000:80
    environment:
      - ASPNETCORE_ENVIRONMENT=Production
      - ASPNETCORE_URLS=http://+:80"
    networks:
      - web
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.nginx-web.rule=Host(`stagingserver.mydomain.com`)"
      - "traefik.http.routers.nginx-web.entrypoints=web"
      - "traefik.http.routers.nginx-web.middlewares=redirect@file"
      - "traefik.http.routers.nginx-secured.rule=Host(`stagingserver.mydomain.com`)"
      - "traefik.http.routers.nginx-secured.entrypoints=web-secured"
      - "traefik.http.routers.nginx-secured.tls.certresolver=mytlschallenge"
        
networks:
  web:
    external: true