I'll throw in SWAG as another option which I found was easiest to setup, albeit it on a VPN/local only setup. It supports certbot for SSL and pre-defined proxy configs for various services (mostly linuxserver.io containers but there are others) and it's easy to edit them to make your own configs. I'm not sure about portainer support as I'm not familiar with that.

I have a setup very similar to what you described in terms of having several web geegaws hiding behind a proxy, with Docker to manage them all. Foundry is even part of my setup as well (speaking of which, join https://lemmy.ml/c/FoundryVTT it's still pretty dead in there but one of the reddit mods came over and while they're not promoting things they're keeping an eye on them).

The proxy server of choice is very much matter of taste.

• I use Caddy, which is very modern, simple to configure, and automatically handles letsencrypt cert setup out of the box.
• Nginx is almost as modern, more flexible/powerful, IMO less beginner-friendly to setup, and has letsencrypt automation but not out of the box. Nginx is probably most common these days.
• I know less about traefik, I feel like that's most often employed as a kubernetes ingress... but maybe people use it for other stuff and I just haven't encountered it. I do feel like outside of k8s, it's MUCH less common than nginx.
• Good ole apache is great if you know how to use it. It's a bit archaic to configure compared to nginx or caddyz and though it is supremely capable, I do not recommend it unless you're already steeped in its ways.

There's a hundred other options as well, but it's really just preference for a toy setup like ours. I've used many of these things and prefer Caddy for my homelab stuff cause it's dreamily simple to configure. If I wasn't using Caddy, I'd be using nginx just because it's so commonly used that you can find help/instructions for anything you can imagine.

Traefik really shines when you have an orchestrator like k8s/nomad automatically driving its config via labels.

I have had an issue with updates to Nginx Proxy Manager breaking itself in the past so I switched to Traefik.

NPM is much more user-friendly when it works. However, as mentioned, Traefik integrates directly with docker through labels, making it very convenient if not a bit more of a learning curve.

So far, the only annoyance I have with Traefik is that I haven't found a very easy way to host itself on a separate server from where the containers are running because it uses the docker.sock file to pick up the labels on running containers automatically. Instead, I manually create files for the files provider. I don't think this is an issue if you are using Kubernetes, but I haven't gotten all the way down that road quite yet, as it is a bit overkill for me.

NPM is great! I even use it in a production environment at work for a small service and it works beautifully

Everyone has an opinion, and at the end of the day, whatever works best for you is what you should stick with.

I like Traefik because you can mount /var/run/docker.sock:/var/run/docker.sock:ro to Traefik, then it can read labels from containers, and automatically wire up new instances based on labels on them. I'm sure there's equivalent in other reverse proxy solutions, but as I said, it works for me and I like it.

I give that container my Cloudflare origin certificate, everything gets encrypted in transit to Cloudflare, and then Cloudflare handles all the SSL management for me, as well as provide extra layer of DDOS protection.

I use NPM which is also a docker image and has automatic let's encrypt and a nice interface. Nginx Proxy Manager.