Heavily inspired by IAreKyleW00t/docker-caddy-cloudflare, the official Caddy Docker image with additional modules added:

• caddy-dns/cloudflare module for DNS-01 ACME validation support with Cloudflare.

docker pull docker.io/emarshal/caddy-custom:latest

This repository makes some opininiated choices for my particular environment/usage. Suggest reviewing at minimum, the following:

• Included modules. (In Dockerfile.)
• Supported platforms. (In docker/build-push-action step in docker.yaml.)

The following tags are available for the emarshal/caddy-custom image.

• latest
• <version> (eg: 2.6.4, including: 2.6, 2, etc.)

Refer to the official Caddy Docker image and docs for more information on using Caddy.

Create the container as usual and include your CF_API_TOKEN. We can utilizing Caddy's support for Environment varaiables to pass these values into our Caddyfile.

Then set the global acme_dns directive in your Caddyfile

{
  acme_dns cloudflare {env.CF_API_TOKEN}
}

See the caddy-dns/cloudflare module and tls directive for advanced usage.

You can generate a Cloudflare API token via the Cloudflare web console using the following steps:

1. Login to your Dashboard
2. Go to Account Profile > API Tokens
3. Click "Create token" (Use the "Create Custom Token" option)
4. Grant the following permissions:
   • Zone > Zone > Read
   • Zone > DNS > Edit

You can build the Docker image locally by doing

docker build -t caddy-custom .