How to use wildcard domain for demo server

[AungKoKoLin1997]

I have a wildcard domain for my demo server. (eg, *.democe.site)
And I answer the question for domains like below.

🎤 Configure the production domains for this project.

The format is a list with these keys:

- hosts: The domain names. List of strings.
- path_prefixes: The path prefixes (if any) that will match this routing rule.
  List of strings. Default: [].
- redirect_to: Apply a redirection to this other domain. By default, it will
  be a 302 redirection, but it can be turned into a 301 redirection by enabling
  the `redirect_permanent` option.
  String. Default: null.
- redirect_permanent: Return 301 instead of 302 in a Traefik redirection, making it permanent.
  Boolean. Default: False.
- cert_resolver: Traefik cert resolver name. String/Boolean. Default: "letsencrypt".
  Set it to `true` to use a self-signed certificate. Set it to `false` to
  disable TLS in those domains. If not `false`, it will force using HTTPS.
- entrypoints: List of entrypoint names to use when creating this rule. Default: [].
  Leave empty to apply this rule on all available entrypoints. Those are defined
  in your Traefik deployment.

See https://www.tecnativa.com/r/Anu for an example.

⚠ Remember that you have to write one-line YAML, at least until Copier
supports multiline input

⚠ Some advanced features are only available if you deploy with Traefik 2.

💡 The 1st host from the 1st domain that has no `path_prefixes` will be considered
the main one. In the example above, it'd be `www.main.com`.
    (Finish with 'Alt+Enter' or 'Esc then Enter')
> [{'hosts': ['*.democe.site']}]

I am using Traefik 2 and this is my inverseproxy.yaml.
Reference from #469

version: "2.4"
services:
  proxy:
    image: traefik:2.4
    networks:
      shared:
        aliases: []
      private:
      public:
    volumes:
      - acme:/etc/traefik/acme:rw,Z
    ports:
      - 80:80
      - 443:443
    depends_on:
      - dockersocket
    restart: unless-stopped
    tty: true
    command:
      - "--entrypoints.web-insecure.address=:80"
      - "--entrypoints.web-main.transport.respondingTimeouts.idleTimeout=60s"
      - "--entrypoints.web-main.http.middlewares=global-error-502@docker"
      - "--log.level=info"
      - "--providers.docker.endpoint=http://dockersocket:2375"
      - "--providers.docker.exposedbydefault=false"
      - "--providers.docker.network=inverseproxy_shared"
      - "--providers.docker=true"
      - "--entrypoints.web-main.address=:443"
      - "--entrypoints.web-main.http.tls.certResolver=letsencrypt"
      - "--certificatesresolvers.letsencrypt.acme.caserver=https://acme-v02.api.letsencrypt.org/directory"
      - "--certificatesresolvers.letsencrypt.acme.email=myemail.com"
      - "--certificatesresolvers.letsencrypt.acme.storage=/etc/traefik/acme/acme-v2.json"
      - "--entrypoints.web-insecure.http.redirections.entryPoint.to=web-main"
      - "--entrypoints.web-insecure.http.redirections.entryPoint.scheme=https"
      - "--certificatesresolvers.letsencrypt.acme.httpchallenge.entrypoint=web-insecure"
  dockersocket:
    image: tecnativa/docker-socket-proxy
    privileged: true
    networks:
      private:
    volumes:
      - "/var/run/docker.sock:/var/run/docker.sock:ro"
    environment:
      CONTAINERS: 1
      NETWORKS: 1
      SERVICES: 1
      SWARM: 1
      TASKS: 1
    restart: unless-stopped
  error-handling:
    image: nginx:alpine
    restart: unless-stopped
    networks:
      - shared
    volumes:
      - error-handling-config:/etc/nginx/conf.d/
      - error-handling-data:/usr/share/nginx/html/
    labels:
      traefik.docker.network: inverseproxy_shared
      traefik.enable: "true"
      traefik.http.routers.error-handling.rule: HostRegexp(`{any:.+}`)
      traefik.http.routers.error-handling.entrypoints: web-main
      traefik.http.routers.error-handling.priority: 1
      traefik.http.routers.error-handling.service: global-error-handler
      traefik.http.routers.error-handling.middlewares: global-error-502
      traefik.http.middlewares.global-error-502.errors.status: 502
      traefik.http.middlewares.global-error-502.errors.service: global-error-handler
      traefik.http.middlewares.global-error-502.errors.query: "/{status}.html"
      traefik.http.services.global-error-handler.loadbalancer.server.port: 80
networks:
  shared:
    internal: true
    driver_opts:
      encrypted: 1
  private:
    internal: true
    driver_opts:
      encrypted: 1
  public:
    driver_opts:
      encrypted: 1
volumes:
  acme:
  error-handling-config:
  error-handling-data:

I configure like this because I want to make one domain per one database by setting dbfilter = %d.
Now, I can't access my odoo instance using any subdomain(eg,demo18.democe.site) but I can ping this subdomain.