Dynamic DNS updater for the ARM based Raspberry PI.

Get youself a account at spDYN or similar provider. If you choose a different provider - make sure to read the Customising section.

This images target the ARM architecture, uses the well known ddclient library and is based on alpine Linux, and thus leads to a slimmer image.

Find the source code at GitHub or the ready-to-run image in the DockerHub and do not forget to star the repository ;-)

Running

Get ready to roll and run the container:

$ docker run --detach \
             --name ddclient \
             --env HOSTNAME=yourdomain.spdns.de \
             --env UPDATE_TOKEN=imwg-futl-mzmw \
             --restart unless-stopped \
             netzfisch/rpi-dyndns

Customising

To customise change ddclient.conf to your needs, e.g. see possible configuration options at this template file. Make sure to use '@@hostname/login/password@@' syntax, otherwise variable replacement will fail!

Than build for yourself and run again:

$ git clone git@github.com:netzfisch/rpi-dyndns.git && cd rpi-dyndns
$ docker build -t netzfisch/rpi-dyndns:custom .
$ docker run ... see above parameters
             netzfisch/rpi-dyndns:custom

If you just need to manually setup, start the container without environment parameters and replace variables with sed:

$ env HOSTNAME=yourdomain.spdns.de LOGIN=yourdomain.spdns.de UPDATE_TOKEN=imwg-futl-mzmw
$ docker exec ddclient sed -i -e 's/@@hostname@@/$HOSTNAME/g' /etc/ddclient.conf
$ ...

Debugging

Check that the environment includes your credentials:

$ docker exec -it ddclient env

After running docker exec ddclient setup look up, if configuration was set right:

$ docker exec ddclient cat /etc/ddclient/ddclient.conf

Finally you could dig into the container:

$ docker exec -it ddclient ash

Contributing

If you find a problem, please create a GitHub Issue.

Have a fix, want to add or request a feature? Pull Requests are welcome!

License

The MIT License (MIT), see LICENSE file.