Build status
This is a lightweight Alpine Linux based Docker image that runs Unbound, an open source high-performance DNS resolver developed by the nice people at NLnet Labs running as your own recursive DNS server in a secure single-layer distroless scratch image modeled by following the best practice principles.
While it leaves almost nothing to be desired, it is perfectly suited for professional and personal use alike.
Features
| Feature | Supported |
|---|---|
| Unprivileged user | yes |
| Unprivileged port (privileged possible) | yes |
| Custom UID/GID build & environment variables | yes |
| Optional full rootless mode | yes |
| CD built single-layer distroless scratch image running Alpine Linux | yes |
Per hardware architecture optimized & CD built OpenSSL |
yes |
| Libevent | yes |
| Recursive DNS as default | yes |
| DNSSEC | yes |
| DNSCrypt | yes |
| DNSTap | yes |
| DNS64 | yes |
| DNS over HTTPS | yes |
| DNS over TLS | yes |
| Redis via UNIX Socket or network | yes |
| EDNS Client Subnet | yes |
| Optional privacy respecting & meaningful healthcheck | yes |
| Optional Unbound statistics for Grafana via Zabbix without 3rd party tools | yes |
| Python | no |
Docker containers are most easily used with docker compose.
Important
We encourage you to read the Documentation page to learn how to get this up and running, some example Docker Compose files can be found here.
If you prefer to use Podman and systemd to manage your containers, example Quadlets can be found here.
You can pull the most recent image from Docker Hub using it's latest tag or by using the corresponding image version number:
docker pull madnuttah/unbound:latest or docker pull madnuttah/unbound:1.1.0-0
The image versioning scheme follows unbound - complemented by a dash and the desired image revision, for example 1.1.0-0.
There are canary builds of the image available. You can pull the image using it's canary tag:
docker pull madnuttah/unbound:canary
Note
Canary builds may contain bugs and are not recommended to be used in production environments. These builds are untested and also unsupported by us.
You can view the changes in the Releases section.
We are here to help! Don't hesitate to contact us through a GitHub Issue if you have any questions, requests or problems with the image.
You can also reach us on Fosstodon:
- Alpine Linux
- Docker
- Unbound
- OpenSSL
- Redis
- Pi-hole
- Aqua Security
- The many Docker Images which got us inspired
Unless otherwise specified, all code is released under the MIT license.
See the LICENSE for details.
- Docker: Apache 2.0
- Unbound: BSD License
- OpenSSL: Apache-style license
Please note that this is a work of private contributors and we're neither affiliated with NLnet Labs, Pi-hole or AdGuard nor is NLnet Labs, Pi-hole or AdGuard involved in the development of the image. The marks and properties 'Unbound', 'Pi-hole' and 'AdGuard Home' are properties of NLnet Labs, Pi-hole and AdGuard respectively. All rights in the source codes, including logos relating to said marks and properties belong to their respective owners.
In case you would like to donate money, please rather spend it on the upstream projects this image relies on.
If you like what we do and if you find this image protecting your privacy and giving back your DNS liberty useful - spread the word, fork our repo, open an issue, make a pull request and don't forget to leave a ⭐ on Docker Hub and GitHub. Many thanks for your support! ❤️