Create public DNS record when creating a container using docker-compose

General
1

Hello forum,

This is my first post and i have a question.
I have a simple docker setup with one synology as my docker host. I am using the Traefik reverse proxy in combination with Let’s encrypt to host some applications for personal use.
When i create a container with docker-compose i can configure the reverse proxy using labels.
After the container has started, the labels will automaticly configure the reverse proxy and the reverse proxy will automatic request a SSL certificate using Let’s encrypt.
Let’s encrypt uses DNS challange and the proxy creates a DNS TXT record so Let’s encrypt can verify Domain ownership.

What i am looking for is a way to automatic create the Host A record and PTR record in DNS when creating a container using docker-compose. I hope there is an application that’s using labels (like the traefik reverse proxy)

Thanks

Wouter Iliohan

2

For my homelab I did set the A record of * to my public ip. I let traefik create wildcard domain certificates. Making a new service available by dns becomes as simple as setting the host rule on the traefik label.

I haven’t seen a Docker equivalent of Kubernetes’s https://github.com/kubernetes-sigs/external-dns. which in fact registeres dns entries for services. If you have some development experience, you could mimik the behavior of Traefik and listen to dockers event stream and whenever a service is started/stopped you could leverage the dns-api to register/unregister dns entries.