run the cloudflared proxy-dns on port 5054 using the DNS over HTTPS feature from cloudflare.
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6 days ago
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Readme

Cloudflared

Build Status Docker image size Docker Pulls License

a docker container which runs the cloudflared proxy-dns at port 5054 based on alpine with some parameters to enable DNS over HTTPS proxy for pi-hole based on tutorials from Oliver Hough and Scott Helme

run

$ docker run --name cloudflared --rm --net host visibilityspots/cloudflared:latest

run with docker-compose

$ docker-compose up

custom upstream DNS service

$ docker run --name cloudflared --rm --net host -e UPSTREAM1=https://dns.google/dns-query visibilityspots/cloudflared:latest

custom port

$ docker run --name cloudflared --rm --net host -e PORT=5053 visibilityspots/cloudflared:latest

dualstack ipv4/ipv6

$ docker run --name cloudflared --rm --net host -e ADDRESS=:: visibilityspots/cloudflared:latest

test

$ dig +short @10.0.0.2 -p 5054 visibilityspots.org
13.225.238.129
13.225.238.53
13.225.238.9
13.225.238.61

build

$ docker build -t visibilityspots/cloudflared:latest .

buildx

$ docker run --rm --privileged multiarch/qemu-user-static --reset -p yes
$ docker buildx build -t visibilityspots/cloudflared:latest --platform linux/amd64,linux/arm/v6,linux/arm/v7 --push .

dgoss

I wrote some tests in a goss.yaml file which can be executed by dgoss to test the created image

$ dgoss run --name cloudflared --rm -ti visibilityspots/cloudflared:latest
INFO: Starting docker container
INFO: Container ID: e5bd35d3
INFO: Sleeping for 0.2
INFO: Running Tests
Process: cloudflared: running: matches expectation: [true]
Package: ca-certificates: installed: matches expectation: [true]
Command: cloudflared --version | head -1: exit-status: matches expectation: [0]
Command: cloudflared --version | head -1: stdout: matches expectation: [cloudflared version DEV (built unknown)]


Total Duration: 0.028s
Count: 4, Failed: 0, Skipped: 0
INFO: Deleting container

License

Distributed under the MIT license