caddy-docker VS traefik

The official Caddy documentation of their Docker image: https://hub.docker.com/_/caddy

I use https://static-web-server.net/

Cross-platform, written in Rust, straightforward configuration, secure defaults, also has a hardened container image and a hardened NixOS module.

I wouldn't recommend Caddy. Their official docker image runs as root unnecessarily (and the reasoning suggests a lack of understanding) [1], and they don't provide a properly sandboxed systemd unit file [2].

[1]: https://github.com/caddyserver/caddy-docker/issues/104

There is also a short section about it on the Docker hub page under the "Adding custom Caddy modules" section: https://hub.docker.com/_/caddy

Caddy uses a number of volumes. Two point directly at files within our project, first our Caddyfile, then our public folder which Caddy will serve live files. The other two are virtual filesystems Docker will create as defined by the master volumes parameters. We can assume the caddy_config volume is where active configuration is stored as it is not discussed on the Caddy Docker Official Image page, so we're copying their parameter exactly, but the caddy_data volume needs some extra discussion. It is used to store a number of things including SSL certificates. By default Docker creates and destroys volumes upon startup and exit. As we want to persist our certificate across sessions we can take advantage of an external Docker volume. These virtual filesystems are created before starting the Docker session for the first time. This can ve done from the command line or more easily from within the Docker Desktop app. Simply choose "Volumes", click the "Create" button and specify caddy_data.

I've been able to create a network with no issues (that I know of yet) but when I try to create the volumes I run into trouble. This specific example is from Caddy2...

For a reverse proxy I would suggest Caddy. The configuration is super easy and it handles SSL for you out of the box using LetsEncrypt! There’s also an official docker image like PHP and MySQL here https://hub.docker.com/_/caddy

Their image is dead simple to use, the config is fine, and auto-https is baked in. You can use it as a sidecar, proxy for multiple images, or just as a base to add your app into, depending on the complexity of your existing config.

However, it's very unlikely that .NET developers will directly expose their Kestrel-based web apps to the internet. Typically, we use other popular web servers like Nginx, Traefik, and Caddy to act as a reverse-proxy in front of Kestrel for various reasons:

Not as good though. Case in point: https://github.com/traefik/traefik/issues/5472#issuecomment-... (that's just from this morning)

I'm speak objectively here. Of course, any built-in auto HTTPS that works (more or less) is better than none. Traefik uses an ACME library that was originally written for Caddy. After the original author left that project, Traefik team started maintaining it. Caddy's users' requirements exceeded what the library was capable of, but unfortunately there was friction in getting it to achieve our requirements. So I ended up writing a new ACME client library in Go and, together with upgrades in CertMagic (Caddy's auto-TLS lib), Caddy has the more flexible, robust, and capable auto-HTTPS functionality.

That is to say, not all auto-HTTPS functionalities are the same.

We'll use Traefik, an open source cloud native gateway that can plug into a Kubernetes cluster. It has the concept of "middleware" that can process API requests before passing them through to a backend. We can configuring a rate limit for all of our API endpoints by matching on the request path:

I did the same question here and here

Sadly there is currently no way of doing so. https://github.com/traefik/traefik/issues/6999

Traefik is another widely used system that has automatic configuration and offers support for more things like swarm/kubernetes/etc.

I have a webapp which I currently have deployed by running nginx in a container. Works as it should, however I am intersted in adding more observability to the webapp and found this reverse-proxy https://github.com/traefik/traefik which seems to expose some nice metrics which can be useful for observability.

``` more details in this (github issue)[https://github.com/traefik/traefik/issues/5059]