Multiple wildcard certificates in a single Traefik container

Traefik Traefik v2
,
1

Hi all,

First off I am new to Traefik, so sorry in advance if it's a dumb question. I am setting up my home lab and want everything to be over HTTPS / SSL without the "Your connection is not private" warning in any browser for any of the self-hosted services I am hosting.

I got halfway through getting things working in my home lab with a single subdomain wildcard certificate e.g. *.local.mydomain.com but then realized that it would be better to segregate the domains and subdomains.

So I would like to get the Traefik instance I have created, to serve all the following domains but I don't know if it supports it or even if LetsEncrypt supports it.

*.mydomain.com
*.media.mydomain.com
*.storage.mydomain.com
*.network.mydomain.com
*.service.mydomain.com

Can I configure the above domains in Traefik's docker-compose.yml file and what would be the changes or additions I will have to make to my existing file?

version: '3'

services:
  traefik:
    image: traefik:latest
    container_name: traefik
    restart: unless-stopped
    security_opt:
      - no-new-privileges:true
    networks:
      - proxy
    ports:
      - 80:80
      - 443:443
    environment:
      - CF_API_EMAIL=azxczxczvasd@zxczxc.com
      #- CF_DNS_API_TOKEN=YOU_API_TOKEN
      - CF_API_KEY=czxczxczxczx
    volumes:
      - /etc/localtime:/etc/localtime:ro
      - /var/run/docker.sock:/var/run/docker.sock:ro
      - /home/traefik/data/traefik.yml:/traefik.yml:ro
      - /home/traefik/data/acme.json:/acme.json
      - /home/traefik/data/config.yml:/config.yml:ro
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.traefik.entrypoints=http"
      - "traefik.http.routers.traefik.rule=Host(`proxy.service.mydomain.in`)"
      - "traefik.http.middlewares.traefik-auth.basicauth.users=azxczxc:$$apr1$$2aw5tzxctnzxcCSx/"
        # Note: all dollar signs in the hash need to be doubled for escaping for above password.
        # https://hostingcanada.org/htpasswd-generator/ << Use the website to generate encrypted password.
      - "traefik.http.middlewares.traefik-https-redirect.redirectscheme.scheme=https"
      - "traefik.http.middlewares.sslheader.headers.customrequestheaders.X-Forwarded-Proto=https"
      - "traefik.http.routers.traefik.middlewares=traefik-https-redirect"
      - "traefik.http.routers.traefik-secure.entrypoints=https"
      - "traefik.http.routers.traefik-secure.rule=Host(`proxy.service.mydomain.in`)"
      - "traefik.http.routers.traefik-secure.middlewares=traefik-auth"
      - "traefik.http.routers.traefik-secure.tls=true"
      - "traefik.http.routers.traefik-secure.tls.certresolver=cloudflare"
      - "traefik.http.routers.traefik-secure.tls.domains[0].main=service.mydomain.in"
      - "traefik.http.routers.traefik-secure.tls.domains[0].sans=*.service.mydomain.in"
      - "traefik.http.routers.traefik-secure.service=api@internal"

networks:
  proxy:
    external: true