traefik-advanced-traefik.yml

api:
  dashboard: true
  debug: true

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

providers:
  docker:
    endpoint: "unix:///var/run/docker.sock"
    exposedByDefault: false
  file:
    filename: /config.yml

certificatesResolvers:
  http:
    acme:
      email: email@example.com
      storage: acme.json
      httpChallenge:
        entryPoint: http

according to https://medium.com/@containeroo/traefik-2-2-docker-global-entrypoint-configuration-ff11d7f84913, should traefik.yml be revised as follows:

api:
  dashboard: true
  debug: true

entryPoints:
  http:
    address: ":80"
    http:
      redirections:
        entryPoint:
          to: https
  https:
    address: ":443"
    http:
      middlewares:
        - default-headers@file
      tls:
        certResolver: cloudflare
        domains:
          - main: example.com
            sans:
              - "*.example.com"

providers:
  docker:
    endpoint: "unix:///var/run/docker.sock"
    exposedByDefault: false
  file:
    filename: /config.yml

certificatesResolvers:
  http:
    acme:
      email: email@email.com
      storage: acme.json
      httpChallenge:
        entryPoint: http

according to https://medium.com/@containeroo/traefik-2-2-docker-global-entrypoint-configuration-ff11d7f84913, should traefik.yml be revised as follows:

api:
  dashboard: true
  debug: true

entryPoints:
  http:
    address: ":80"
    http:
      redirections:
        entryPoint:
          to: https
  https:
    address: ":443"
    http:
      middlewares:
        - default-headers@file
      tls:
        certResolver: cloudflare
        domains:
          - main: example.com
            sans:
              - "*.example.com"

providers:
  docker:
    endpoint: "unix:///var/run/docker.sock"
    exposedByDefault: false
  file:
    filename: /config.yml

certificatesResolvers:
  http:
    acme:
      email: email@email.com
      storage: acme.json
      httpChallenge:
        entryPoint: http

Thanks a lot! This gist ist for our advanced Traefik guide. I have created a new one with your example and I will link it in the medium article mentioned by you. Thanks again :)

https://gist.github.com/containeroo-gists/8f924b5c976330e76b07b4abcad9ebd4

Thank You Robin. My contribution pales by comparison to yours.