Caddy2 cloudflare plugin

How to use cloudflare with caddy2?

Hi @Dejan_Milosevic,

Caddy v2 doesn’t have a slick custom build download page, so you’d have to compile it manually with the Cloudflare DNS module included.

See the DNS modules’ Github page for more info and instructions: https://github.com/caddyserver/tls.dns

Where I can find documentation about how to do that?

Thanks

The Github link I provided outlines how to go about it.

First plug in your desired provider module and then configure the DNS challenge in your Caddy JSON, for example:

{
	"challenges": {
		"dns": {
			"provider": "cloudflare",
			"api_token": "secret"
		}
	}
}

—https://github.com/caddyserver/tls.dns

So as module i use https://github.com/caddyserver/tls.dns or some other link?

@Dejan_Milosevic I wrote a step-by-step tutorial on how to compile Caddy v2 with Cloudflare plugin here :point_down: (replace @v2.0.0-beta.14 with @v2.0.0-beta.15)

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Compiling caddy with custom modules using docker.

docker run --rm -v `pwd`/output:/output caddy:builder sh -c "caddy-builder github.com/caddy-dns/cloudflare && cp /usr/bin/caddy /output/"

No need to checkout source or install go.

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Is there any way we could get that to work in a docker compose file?

Yep, take a look at the docs on Docker Hub: https://hub.docker.com/_/caddy/

Look for the “Adding custom Caddy modules” section. Just make a Dockerfile, add the plugins you want to it, then build from that Dockerfile.

Thanks for this! Somewhat new to Dockerfiles and have never used them before. I generally just follow self hosted tutorials and it’s all done via Docker Compose. What I don’t understand is that how does docker compose know to use the image from the Dockerfile?

Example:

Docker file:

FROM caddy:2.0.0-builder AS builder

RUN caddy-builder \
    github.com/caddy-dns/cloudflare

FROM caddy:2.0.0

COPY --from=builder /usr/bin/caddy /usr/bin/caddy

Compose file:

version: "3"

services:
  caddy:
    container_name: caddy
    build: .
    ports:
      - 80:80
      - 443:443
    volumes:
      - /home/docker/caddy/Caddyfile:/etc/caddy/Caddyfile
      - /home/docker/caddy/data:/data
      - /home/docker/caddy/config:/config

Is the build: . directive enough for Docker Compose to know which image to use?

A build: line tells Compose to build a container based on the context you set, in exactly the same manner as the docker build command (probably because it effectively is the docker build command).

. is a reference to the current directory, so - assuming docker-compose.yml and Dockerfile are in the same directory and you kick off the build from there, yes, it should work.

Basically just send docker-compose build caddy and you should be off to the races.

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