Traefik + cloudflared with full strict tunnel on docker - docker

Question

I have a VM which run multiple containers all linked to one docker network.
Traefik (as reverse proxy & load balancer)
cloudflared as tunnel
whoami (for testing purposes)
and some containers like photoprism, nextcloud, node-red,...
I generated an origin cert via Cloudflare which has been added to Traefik.
In Cloudflare, I have a subdomain which points via the tunnel to https://172.16.10.11 (ip from the VM). This causes an unsecure connection (IP SAN applied -> I don't think this is possible on a private ip?). When I disable TLS verification on Cloudflare, it works. However, I am trying to set this up properly. Next,I tried pointing my domain towards https://localhost. the cloudflared service running in a container cannot reach any other services as these are located other containers.
I was thinking, what if I run the cloudflared service within the Traefik container, I believe I can reach Traefik via localhost?
Do you have any advice on how to achieve a secure tunnel with cert verification? Or is this not realistic when self-hosting?
Current docker compose:
version: '3'
services:
traefik:
image: traefik:latest
command:
- --log.level=debug
- --api.insecure=true
- --providers.docker=true
- --providers.docker.exposedbydefault=false
- --entrypoints.web.address=:80
- --entrypoints.websecure.address=:443
- --serverstransport.insecureskipverify
- --providers.file.filename=/etc/traefik/dynamic_conf.yml
- --providers.file.watch=true
ports:
- "8080:8080"
- "443:443"
- "80:80"
networks:
- proxy_network
volumes:
- /var/run/docker.sock:/var/run/docker.sock
- traefik-data:/etc/traefik
labels:
- traefik.enable=true
- traefik.docker.network=proxy_network
- traefik.http.routers.traefik.rule=Host(`${DOMAINNAME_TRAEFIK}`)
- traefik.http.routers.traefik.entrypoints=web
- traefik.http.routers.traefik.service=traefik
- traefik.http.services.traefik.loadbalancer.server.port=8080
tunnel:
container_name: cloudflared-tunnel
image: cloudflare/cloudflared
#restart: unless-stopped
networks:
- proxy_network
command: tunnel --no-autoupdate run --token ${CLOUDFLARED_TOKEN}
whoami:
image: traefik/whoami
container_name: whoami1
command:
# It tells whoami to start listening on 2001 instead of 80
- --port=2000
- --name=iamfoo
networks:
- proxy_network
labels:
- traefik.enable=true
- traefik.http.routers.whoami.rule=Host(`${DOMAINNAME}`)
- traefik.http.routers.whoami.entrypoints=websecure
- traefik.http.routers.whoami.tls=true
- traefik.http.routers.whoami.service=whoami
- traefik.http.services.whoami.loadbalancer.server.port=2000
volumes:
traefik-data:
driver: local
networks:
proxy_network:
name: proxy_network
external: true
I expect a secure tunnel solution and to make sure that this architecture is setup in a good way.