General
Images

linuxserver/duckdns

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Duckdns is a free service which will point a DNS (sub domains of duckdns.org) to an IP of your choice. The service is completely free, and doesn't require reactivation or forum posts to maintain its existence.

Supported Architectures

Our images support multiple architectures such as x86-64, arm64 and armhf. We utilise the docker manifest for multi-platform awareness. More information is available from docker here and our announcement here.

Simply pulling linuxserver/duckdns should retrieve the correct image for your arch, but you can also pull specific arch images via tags.

The architectures supported by this image are:

Architecture

Tag

x86-64

amd64-latest

arm64

arm64v8-latest

armhf

arm32v7-latest

Usage

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

docker

docker create \
--name=duckdns \
-e PUID=1000 `#optional` \
-e PGID=1000 `#optional` \
-e TZ=Europe/London \
-e SUBDOMAINS=subdomain1,subdomain2 \
-e TOKEN=token \
-e LOG_FILE=false `#optional` \
-v </path/to/appdata/config>:/config `#optional` \
--restart unless-stopped \
linuxserver/duckdns

docker-compose

Compatible with docker-compose v2 schemas.

---
version: "2"
services:
duckdns:
image: linuxserver/duckdns
container_name: duckdns
environment:
- PUID=1000 #optional
- PGID=1000 #optional
- TZ=Europe/London
- SUBDOMAINS=subdomain1,subdomain2
- TOKEN=token
- LOG_FILE=false #optional
volumes:
volumes:
- </path/to/appdata/config>:/config #optional
restart: unless-stopped

Parameters

Docker 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.

Ports (-p)

Parameter

Function

Environment Variables (-e)

Env

Function

PUID=1000

for UserID - see below for explanation

PGID=1000

for GroupID - see below for explanation

TZ=Europe/London

Specify a timezone to use EG Europe/London

SUBDOMAINS=subdomain1,subdomain2

multiple subdomains allowed, comma separated, no spaces

TOKEN=token

DuckDNS token

LOG_FILE=false

Set to true to log to file (also need to map /config).

Volume Mappings (-v)

Volume

Function

/config

Used in conjunction with logging to file.

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)

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

Support Info

  • Shell access whilst the container is running:

    • docker exec -it duckdns /bin/bash

  • To monitor the logs of the container in realtime:

    • docker logs -f duckdns

  • Container version number

    • docker inspect -f '{{ index .Config.Labels "build_version" }}' duckdns

  • Image version number

    • docker inspect -f '{{ index .Config.Labels "build_version" }}' linuxserver/duckdns

Versions

  • 24.09.19: - Fix perms on github and remove chmod that can stall the container.

  • 28.06.19: - Rebasing to alpine 3.10.

  • 23.03.19: - Switching to new Base images, shift to arm32v7 tag.

  • 22.02.19: - Rebasing to alpine 3.9.

  • 08.02.19: - Update readme with optional parameters.

  • 10.12.18: - Fix docker compose example.

  • 15.10.18: - Multi-arch image.

  • 22.08.18: - Rebase to alpine 3.8.

  • 08.12.17: - Rebase to alpine 3.7.

  • 28.05.17: - Rebase to alpine 3.6.

  • 09.02.17: - Rebase to alpine 3.5.

  • 17.11.16: - Initial release.