whoami:
    image: traefik/whoami
    labels:
      - traefik.http.routers.route1.rule=PathPrefix(`/foo`)
      - traefik.http.routers.route1.middlewares=passtls
      - traefik.http.routers.route1.tls=true
      - traefik.http.middlewares.passtls.passtlsclientcert.pem=true