Add repo links to README.md

Should make it easier to finds the original source.

.drone.yml

@@ -2,18 +2,6 @@ kind: pipeline
 name: linux-amd64
 
 steps:
-  - name: get qemu
-    image: ubuntu:bionic
-    commands:
-      - apt-get update
-      - apt-get install -y make wget
-      - make build/qemu-x86_64-static
-    when:
-      branch:
-        - master
-      event:
-        - push
-        - tag
 
   - name: build
     image: plugins/docker
@@ -37,18 +25,6 @@ kind: pipeline
 name: linux-arm
 
 steps:
-  - name: get qemu
-    image: ubuntu:bionic
-    commands:
-      - apt-get update
-      - apt-get install -y make wget
-      - make build/qemu-arm-static
-    when:
-      branch:
-        - master
-      event:
-        - push
-        - tag
 
   - name: build
     image: plugins/docker
@@ -75,18 +51,6 @@ kind: pipeline
 name: linux-arm64
 
 steps:
-  - name: get qemu
-    image: ubuntu:bionic
-    commands:
-      - apt-get update
-      - apt-get install -y make wget
-      - make build/qemu-aarch64-static
-    when:
-      branch:
-        - master
-      event:
-        - push
-        - tag
 
   - name: build
     image: plugins/docker

Dockerfile

@@ -1,21 +1,27 @@
 ARG REPO=library
+
+FROM multiarch/qemu-user-static:4.1.0-1 as qemu-user-static
+# Make sure a dummy x86_64 file exists so that the copy command doesn't error
+RUN touch /usr/bin/qemu-x86_64-fake
+
 FROM ${REPO}/python:3-alpine
 
+# Copy mutliarch file to run builds on x86_64
 ARG ARCH=x86_64
-COPY ./build/qemu-${ARCH}-static /usr/bin/
-
+COPY --from=qemu-user-static /usr/bin/qemu-${ARCH}-* /usr/bin/
 
 RUN mkdir -p /src
 WORKDIR /src
 
-COPY ./requirements.txt ./
-RUN pip install -r ./requirements.txt
+# Get Cloudflare example script
+ENV CF_VERSION=2.6.0
+ADD https://raw.githubusercontent.com/cloudflare/python-cloudflare/$CF_VERSION/examples/example_update_dynamic_dns.py ./update_ddns.py
+RUN chmod +x ./update_ddns.py
 
-COPY ./start.sh ./
-COPY ./update_ddns.py ./update_ddns.py
+RUN pip install cloudflare==$CF_VERSION
 
 ENV DOMAIN=""
 
 USER nobody
 
-CMD [ "/src/start.sh" ]
+ENTRYPOINT [ "/src/update_ddns.py" ]

Makefile

@@ -1,4 +1,5 @@
 DOCKER_TAG ?= cloudflare-ddns-dev-${USER}
+.PHONY: clean
 
 .PHONY: default
 default: test
@@ -7,35 +8,25 @@ default: test
 test:
 	@echo ok
 
-.PHONY: update
-update:
-	curl -o update_ddns.py https://raw.githubusercontent.com/cloudflare/python-cloudflare/master/examples/example_update_dynamic_dns.py
-	chmod +x update_ddns.py
-
 .PHONY: build
-build: build/qemu-x86_64-static
+build:
 	docker build . -t ${DOCKER_TAG}
 
-build/qemu-arm-static:
-	./get_qemu.sh arm
-
-build/qemu-x86_64-static:
-	./get_qemu.sh x86_64
-
-build/qemu-aarch64-static:
-	./get_qemu.sh aarch64
-
 .PHONY: cross-build-arm
-cross-build-arm: build/qemu-arm-static
+cross-build-arm:
 	docker build --build-arg REPO=arm32v6 --build-arg ARCH=arm . -t ${DOCKER_TAG}-linux-arm
 
 .PHONY: cross-build-arm64
-cross-build-arm64: build/qemu-aarch64-static
+cross-build-arm64:
 	docker build --build-arg REPO=arm64v8 --build-arg ARCH=aarch64 . -t ${DOCKER_TAG}-linux-arm64
 
+.PHONY: all
+all: build cross-build-arm cross-build-arm64
+
 .PHONY: run
 run: build
-	docker run --rm -e DOMAIN=${DOMAIN} \
+	docker run --rm  \
 		-e CF_API_EMAIL=${CF_API_EMAIL} \
 		-e CF_API_KEY=${CF_API_KEY} \
-		${DOCKER_TAG}
+		${DOCKER_TAG} \
+		"${DOMAIN}"

README.md

@@ -1,21 +1,34 @@
 # Docker Cloudfare DDNS
 
-Simple Docker image to dynamically update a Cloudflare DNS record.
+Simple Docker image that wraps an example script to dynamically update a Cloudflare DNS record.
 
 ## Usage
 
-All parameters are passed to the script using env variables, so export the following:
+There are two things to configure. First, the domain that you wish to update needs to be provided as a command line argument. This can be done by adding it to the end of your run command (example in the Makefile) or by adding it as a command to your compose file. Eg:
 
-    DOMAIN=sub.example.com
-    CF_API_EMAIL=admin@example.com
+    ddns:
+      image: IamTheFij/cloudflare-ddns
+      command: ["example.com"]
+
+Your Cloudflare credentials can be passed in any way that [python-cloudflare](https://github.com/cloudflare/python-cloudflare) allows. Generally, either via envioronment variables:
+
+    CF_API_EMAIL=admin@example.com  # Do not set if using an API Token
     CF_API_KEY=00000000000000000000
+    CF_API_CERTKEY='v1.0-...'
+
+Or by providing a file mounted to the working directory in the image, `/src/.cloudflare.cfg` that contains something like:
+
+    [CloudFlare]
+    emal = admin@example.com  # Do not set if using an API Token
+    token = 00000000000000000000
+    certtoken = v1.0-...
 
 Then run. To execute from this directory, you can use the convenient Make target.
 
     make run
 
-## Development
+## Source
 
-The script is straight from the examples provided by Cloudflare on their Github. The latest version can be downloaded using:
+Original source: https://git.iamthefij.com/iamthefij/docker-cloudflare-ddns
 
-    make update
+Github mirror: https://github.com/iamthefij/docker-cloudflare-ddns

get_qemu.sh

@@ -1,13 +0,0 @@
-#! /bin/bash
-
-HOST_ARCH=x86_64
-VERSION=v2.9.1-1
-
-mkdir -p build
-cd build
-
-for target_arch in $*; do
-  wget -N https://github.com/multiarch/qemu-user-static/releases/download/$VERSION/${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
-  tar -xvf ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
-  rm ${HOST_ARCH}_qemu-${target_arch}-static.tar.gz
-done

requirements.txt

@@ -1 +0,0 @@
-cloudflare

start.sh

@@ -1,3 +0,0 @@
-#! /bin/sh
-
-exec /src/update_ddns.py $DOMAIN

update_ddns.py

@@ -1,139 +0,0 @@
-#!/usr/bin/env python
-"""Cloudflare API code - example"""
-
-from __future__ import print_function
-
-import os
-import sys
-import re
-import json
-import requests
-
-sys.path.insert(0, os.path.abspath('..'))
-import CloudFlare
-
-def my_ip_address():
-    """Cloudflare API code - example"""
-
-    # This list is adjustable - plus some v6 enabled services are needed
-    # url = 'http://myip.dnsomatic.com'
-    # url = 'http://www.trackip.net/ip'
-    # url = 'http://myexternalip.com/raw'
-    url = 'https://api.ipify.org'
-    try:
-        ip_address = requests.get(url).text
-    except:
-        exit('%s: failed' % (url))
-    if ip_address == '':
-        exit('%s: failed' % (url))
-
-    if ':' in ip_address:
-        ip_address_type = 'AAAA'
-    else:
-        ip_address_type = 'A'
-
-    return ip_address, ip_address_type
-
-def do_dns_update(cf, zone_name, zone_id, dns_name, ip_address, ip_address_type):
-    """Cloudflare API code - example"""
-
-    try:
-        params = {'name':dns_name, 'match':'all', 'type':ip_address_type}
-        dns_records = cf.zones.dns_records.get(zone_id, params=params)
-    except CloudFlare.exceptions.CloudFlareAPIError as e:
-        exit('/zones/dns_records %s - %d %s - api call failed' % (dns_name, e, e))
-
-    updated = False
-
-    # update the record - unless it's already correct
-    for dns_record in dns_records:
-        old_ip_address = dns_record['content']
-        old_ip_address_type = dns_record['type']
-
-        if ip_address_type not in ['A', 'AAAA']:
-            # we only deal with A / AAAA records
-            continue
-
-        if ip_address_type != old_ip_address_type:
-            # only update the correct address type (A or AAAA)
-            # we don't see this becuase of the search params above
-            print('IGNORED: %s %s ; wrong address family' % (dns_name, old_ip_address))
-            continue
-
-        if ip_address == old_ip_address:
-            print('UNCHANGED: %s %s' % (dns_name, ip_address))
-            updated = True
-            continue
-
-        # Yes, we need to update this record - we know it's the same address type
-
-        dns_record_id = dns_record['id']
-        dns_record = {
-            'name':dns_name,
-            'type':ip_address_type,
-            'content':ip_address
-        }
-        try:
-            dns_record = cf.zones.dns_records.put(zone_id, dns_record_id, data=dns_record)
-        except CloudFlare.exceptions.CloudFlareAPIError as e:
-            exit('/zones.dns_records.put %s - %d %s - api call failed' % (dns_name, e, e))
-        print('UPDATED: %s %s -> %s' % (dns_name, old_ip_address, ip_address))
-        updated = True
-
-    if updated:
-        return
-
-    # no exsiting dns record to update - so create dns record
-    dns_record = {
-        'name':dns_name,
-        'type':ip_address_type,
-        'content':ip_address
-    }
-    try:
-        dns_record = cf.zones.dns_records.post(zone_id, data=dns_record)
-    except CloudFlare.exceptions.CloudFlareAPIError as e:
-        exit('/zones.dns_records.post %s - %d %s - api call failed' % (dns_name, e, e))
-    print('CREATED: %s %s' % (dns_name, ip_address))
-
-def main():
-    """Cloudflare API code - example"""
-
-    try:
-        dns_name = sys.argv[1]
-    except IndexError:
-        exit('usage: example-update-dynamic-dns.py fqdn-hostname')
-
-    host_name, zone_name = dns_name.split('.', 1)
-
-    ip_address, ip_address_type = my_ip_address()
-
-    print('MY IP: %s %s' % (dns_name, ip_address))
-
-    cf = CloudFlare.CloudFlare()
-
-    # grab the zone identifier
-    try:
-        params = {'name':zone_name}
-        zones = cf.zones.get(params=params)
-    except CloudFlare.exceptions.CloudFlareAPIError as e:
-        exit('/zones %d %s - api call failed' % (e, e))
-    except Exception as e:
-        exit('/zones.get - %s - api call failed' % (e))
-
-    if len(zones) == 0:
-        exit('/zones.get - %s - zone not found' % (zone_name))
-
-    if len(zones) != 1:
-        exit('/zones.get - %s - api call returned %d items' % (zone_name, len(zones)))
-
-    zone = zones[0]
-
-    zone_name = zone['name']
-    zone_id = zone['id']
-
-    do_dns_update(cf, zone_name, zone_id, dns_name, ip_address, ip_address_type)
-    exit(0)
-
-if __name__ == '__main__':
-    main()
-