V2 https example

Traefik Traefik v2 (latest)
,
8

Update with the DEBUG log:

version: '3.7'
services:
  web:
    image: traefik:2.0.4
    restart: unless-stopped
    command:
      - "--log.level=DEBUG"
      - "--providers.docker=true"
      - "--entryPoints.https.address=:443"
    ports:
      - 443:443
    networks:
      - local
    depends_on:
      - backend
    volumes:
      - /var/run/docker.sock:/var/run/docker.sock:ro
  backend:
    image: containous/whoami
    command:
      - "--port=5678"
    restart: unless-stopped
    labels:
      - "traefik.enable=true"
      - "traefik.http.routers.backend.entrypoints=https"
      - "traefik.http.routers.backend.rule=HostRegexp(`{host:.+}`)"
      - "traefik.http.services.backend.loadbalancer.server.port=5678"
networks:
  local:

Produces:

backend_1  | Starting up on port 5678
web_1      | time="2019-11-01T12:57:53Z" level=info msg="Configuration loaded from flags."
web_1      | time="2019-11-01T12:57:53Z" level=info msg="Traefik version 2.0.4 built on 2019-10-28T20:23:57Z"
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Static configuration loaded {\"global\":{\"checkNewVersion\":true},\"serversTransport\":{\"maxIdleConnsPerHost\":200},\"entryPoints\":{\"https\":{\"address\":\":443\",\"transport\":{\"lifeCycle\":{\"graceTimeOut\":10000000000},\"respondingTimeouts\":{\"idleTimeout\":180000000000}},\"forwardedHeaders\":{}}},\"providers\":{\"providersThrottleDuration\":2000000000,\"docker\":{\"watch\":true,\"endpoint\":\"unix:///var/run/docker.sock\",\"defaultRule\":\"Host(`{{ normalize .Name }}`)\",\"exposedByDefault\":true,\"swarmModeRefreshSeconds\":15000000000}},\"log\":{\"level\":\"DEBUG\",\"format\":\"common\"}}"
web_1      | time="2019-11-01T12:57:53Z" level=info msg="\nStats collection is disabled.\nHelp us improve Traefik by turning this feature on :)\nMore details on: https://docs.traefik.io/v2.0/contributing/data-collection/\n"
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="No default certificate, generating one"
web_1      | time="2019-11-01T12:57:53Z" level=info msg="Starting provider aggregator.ProviderAggregator {}"
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Start TCP Server" entryPointName=https
web_1      | time="2019-11-01T12:57:53Z" level=info msg="Starting provider *docker.Provider {\"watch\":true,\"endpoint\":\"unix:///var/run/docker.sock\",\"defaultRule\":\"Host(`{{ normalize .Name }}`)\",\"exposedByDefault\":true,\"swarmModeRefreshSeconds\":15000000000}"
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Provider connection established with docker 19.03.2 (API 1.40)" providerName=docker
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Configuration received from provider docker: {\"http\":{\"routers\":{\"backend\":{\"entryPoints\":[\"https\"],\"service\":\"backend\",\"rule\":\"HostRegexp(`{host:.+}`)\"},\"web-traefik\":{\"service\":\"web-traefik\",\"rule\":\"Host(`web-traefik`)\"}},\"services\":{\"backend\":{\"loadBalancer\":{\"servers\":[{\"url\":\"http://172.20.0.2:5678\"}],\"passHostHeader\":true}},\"web-traefik\":{\"loadBalancer\":{\"servers\":[{\"url\":\"http://172.21.0.2:80\"}],\"passHostHeader\":true}}}},\"tcp\":{}}" providerName=docker
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="No entryPoint defined for this router, using the default one(s) instead: [https]" routerName=web-traefik@docker
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating middleware" middlewareName=pipelining middlewareType=Pipelining entryPointName=https routerName=web-traefik@docker serviceName=web-traefik
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating load-balancer" entryPointName=https routerName=web-traefik@docker serviceName=web-traefik
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating server 0 http://172.21.0.2:80" routerName=web-traefik@docker serviceName=web-traefik serverName=0 entryPointName=https
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Added outgoing tracing middleware web-traefik" routerName=web-traefik@docker middlewareName=tracing middlewareType=TracingForwarder entryPointName=https
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating middleware" serviceName=backend middlewareName=pipelining middlewareType=Pipelining entryPointName=https routerName=backend@docker
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating load-balancer" serviceName=backend entryPointName=https routerName=backend@docker
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating server 0 http://172.20.0.2:5678" routerName=backend@docker serviceName=backend serverName=0 entryPointName=https
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Added outgoing tracing middleware backend" entryPointName=https routerName=backend@docker middlewareType=TracingForwarder middlewareName=tracing
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="Creating middleware" middlewareType=Recovery entryPointName=https middlewareName=traefik-internal-recovery
web_1      | time="2019-11-01T12:57:53Z" level=debug msg="No default certificate, generating one"

$ curl -k -I https://localhost
HTTP/2 404 
content-type: text/plain; charset=utf-8
x-content-type-options: nosniff
content-length: 19
date: Fri, 01 Nov 2019 12:58:05 GMT

web_1      | time="2019-11-01T12:58:05Z" level=debug msg="Serving default certificate for request: \"localhost\""

Please - any pointers? Thanks.

PS: Why is web-traefik being created?