This is a Fork of https://github.com/linuxserver/docker-duckdns which i modified to add Dual-Stack support and ipv6 only support, without the need of a dns query.

This is just meant to be a personal fork for my servers, but if you need the modification, i gladly share it. Otherwise head over to https://github.com/linuxserver/docker-duckdns

Dont forget, if the container is running on a bridge, it needs ipv6 support. For simplicity sake, you can just run it on the Host
_{thanks to punkidow for reminding me :D}

Application Setup

• Go to the duckdns website, register your subdomain(s) and retrieve your token
• Create a container with your subdomain(s) and token
• It will update your IP with the DuckDNS service every 5 minutes (with a random jitter)

Usage

Here are some example snippets to help you get started creating a container.

docker-compose (recommended, click here for more info)

---
version: "2.1"
services:
  duckdns:
    image: mainfrezzer/duckdns:latest
    container_name: duckdns
    environment:
      - PUID=1000 #optional
      - PGID=1000 #optional
      - TZ=Etc/UTC #optional
      - SUBDOMAINS=subdomain1,subdomain2
      - TOKEN=token
      - LOG_FILE=false #optional
      - IPV6=dual #choose between false, dual or only
    volumes:
      - /path/to/appdata/config:/config #optional
    restart: unless-stopped

docker cli (click here for more info)

docker run -d \
  --name=duckdns \
  -e PUID=1000 `#optional` \
  -e PGID=1000 `#optional` \
  -e TZ=Etc/UTC `#optional` \
  -e SUBDOMAINS=subdomain1,subdomain2 \
  -e TOKEN=token \
  -e LOG_FILE=false `#optional` \
  -e IPV6=dual `#choose between false, dual or only` \
  -v /path/to/appdata/config:/config `#optional` \
  --restart unless-stopped \
  mainfrezzer/duckdns:latest

Parameters

Container images are configured using parameters passed at runtime (such as those above). These parameters are separated by a colon and indicate <external>:<internal> respectively. For example, -p 8080:80 would expose port 80 from inside the container to be accessible from the host's IP on port 8080 outside the container.

Parameter	Function
-e PUID=1000	for UserID - see below for explanation
-e PGID=1000	for GroupID - see below for explanation
-e TZ=Etc/UTC	specify a timezone to use, see this list.
-e SUBDOMAINS=subdomain1,subdomain2	multiple subdomains allowed, comma separated, no spaces
-e TOKEN=token	DuckDNS token
-e LOG_FILE=false	Set to true to log to file (also need to map /config).
-e IPV6=dual	Set to false to only update the ipv4, dual for both and only for ipv6 only.
-v /config	Used in conjunction with logging to file.

Environment variables from files (Docker secrets)

You can set any environment variable from a file by using a special prepend FILE__.

As an example:

-e FILE__PASSWORD=/run/secrets/mysecretpassword

Will set the environment variable PASSWORD based on the contents of the /run/secrets/mysecretpassword file.

Umask for running applications

For all of our images we provide the ability to override the default umask settings for services started within the containers using the optional -e UMASK=022 setting. Keep in mind umask is not chmod it subtracts from permissions based on it's value it does not add. Please read up here before asking for support.

User / Group Identifiers

When using volumes (-v flags) permissions issues can arise between the host OS and the container, we avoid this issue by allowing you to specify the user PUID and group PGID.

Ensure any volume directories on the host are owned by the same user you specify and any permissions issues will vanish like magic.

In this instance PUID=1000 and PGID=1000, to find yours use id user as below:

  $ id username
    uid=1000(dockeruser) gid=1000(dockergroup) groups=1000(dockergroup)

You only need to set the PUID and PGID variables if you are mounting the /config folder