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DuckDNS DNS Updater

This image will keep the specified domains on DuckDNS updated.

This script was adapted from the theonemule/docker-dynamic-dns repository. It was modified and updated to work with Duck DNS and compiled to run on multiple linux architectures.

WARNING: This script also does an IPv6 check before each update to DuckDNS. You might get throttled if your interval is set too low. A failure message will appear if your connection does not support IPv6 but the container will continue to update any domains IPv4 address.

Supported Platforms

  • linux/arm/v6
  • linux/arm/v7
  • linux/arm64
  • linux/386
  • linux/amd64
  • linux/s390x
  • linux/ppc64le

Container Configuration

There are 5 environment variables for configuration. Bold items are required.

Name Type Description
TOKEN text DuckDNS access token
DOMAINS text Comma separated list of domains to update
IP ipaddress Set the IP address for the domains
IP6 ipaddress Set the IPv6 address for the domains
INTERVAL number Time in minutes to update

You can suffix _FILE to all the environment variable names above to read these values from a file (secrets).

  • If the INTERVAL is not set or set to 0 the container will stop when it has updated the IP address.
  • The IPv4 and IPv6 will be auto-detected unless specified.
  • The Domain list does not require the .duckdns.org part of the domain.

Building this Image

Use the unified build tool. There are no additional parameters to configure.

Health check

This image checks to ensure that the duckdns script is running and that www.duckdns.org is resolvable in DNS.