Multiple websites and port 443

I have a little dilemma. I recently upgraded to a more powerful server and created a new subdomain new.example.com for my latest project. It uses Docker. The problem is that my two other websites example.com and shop.example.com cannot run when the new one is running, as I must kill all processes on port 443 to allow Docker to occupy it... I have tried to move Apache to port 8443, but it isn't making a difference. I have also tried to relax Cloudflare SSL settings to Flexible, however this just leads to other errors.

I either get redirects to the new subdomain or it gives 521 errors.

Can anyone help? I'm relatively new to self hosting and I am clueless.

2 comments

You need a reverse proxy container, one that can listen on 443 and direct requests to the appropriate container.

I'm a fan of Traefik for docker scenarios. It's a little complicated compared to something like nginx, but is indirectly flexible and powerful.

Here's my config as a starting point, the docs for Traefik are pretty good.
You need to expose your docker container on another port, and route traffic to that subdomain to your docker container locally through NGINX or Apache