Traefik uses wrong frontend rule with Jupyterhub - docker

Question

Traefik uses a different frontend rule for Jupyterhub than the one that I specified as label. I set it to 'hub.domain.com' but traefik says rule found "Host:jupyterhub.jupyterhub.domain.com". There seems to be some overwriting going on. There is no label with "Host:jupyterhub.jupyterhub.domain.com"
This is my Docker Compose:
version: '3'
services:
jupyterhub:
build: jupyterhub
container_name: jupyterhub_hub
volumes:
- /var/run/docker.sock:/var/run/docker.sock
environment:
DOCKER_JUPYTER_IMAGE: jupyterlab_img
DOCKER_NETWORK_NAME: ${COMPOSE_PROJECT_NAME}_default
OAUTH_CLIENT_ID: ${OAUTH_CLIENT_ID}
OAUTH_CLIENT_SECRET: ${OAUTH_CLIENT_SECRET}
OAUTH_CALLBACK_URL: ${OAUTH_CALLBACK_URL}
HUB_IP: jupyterhub_hub
labels:
- "traefik.enable=true"
- "treafik.frontend.rule=Host:${HOST}"
volumes:
- jupyterhub_data:/srv/jupyterhub
traefik:
image: traefik:1.7-alpine
ports:
- "80:80"
- "443:443"
- "8080:8080"
volumes:
- /opt/appdata/traefik/traefik.toml:/etc/traefik/traefik.toml
- /var/run/docker.sock:/var/run/docker.sock
- /opt/appdata/traefik/acme.json:/etc/traefik/acme.json
jupyterlab:
build: jupyterlab
image: jupyterlab_img
command: echo
volumes:
jupyterhub_data:
And this is my traefik.toml:
debug = false
logLevel = "ERROR"
defaultEntryPoints = ["https","http"]
[entryPoints]
[entryPoints.http]
address = ":80"
[entryPoints.http.redirect]
entryPoint = "https"
[entryPoints.https]
address = ":443"
[entryPoints.https.tls]
[retry]
[api]
dashboard = true
insecure = true
[docker]
endpoint = "unix:///var/run/docker.sock"
domain = "domain.com"
watch = true
exposedByDefault = false
[acme]
email = "info#domain.com"
storage = "acme.json"
entryPoint = "https"
onHostRule = true
[acme.httpChallenge]
entryPoint = "http"