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Choose Docker or a runner installation
Zonemaster-CLI is the command-line interface to Zonemaster-Engine. The official documentation supports both local installation and Docker invocation. The practical choice depends on what your runner permits and how you want to manage dependencies and versions.
| Approach | When it fits | Considerations |
|---|---|---|
| Docker image | The runner has a usable Docker installation and container networking. | Avoids installing Zonemaster’s Perl dependency stack directly on the runner. Select and manage the image tag deliberately. |
| Install the CLI | Docker is unavailable or your runner is already configured for the CLI’s dependencies. | Use the official instructions for the runner’s operating system; installation steps differ by platform. |
The official Zonemaster-CLI installation guide prefers the project package repository and apt install zonemaster-cli for Debian and Ubuntu, and also documents a CPAN route. Rocky Linux and FreeBSD have separate dependency and CPAN instructions; do not assume the Debian procedure applies to them.
Run Zonemaster from a CI job
Docker example
Ensure Docker is installed and usable on the runner, then invoke the image with the domain under test:
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docker run -t --rm zonemaster/cli example.com --no-ipv6Replace example.com with your zone. The official guide also shows --pull always to fetch the current image. That is convenient when you want to track updates, but it makes the image version change without a corresponding workflow edit. For repeatable builds, choose a version tag and update it intentionally. Docker Hub’s zonemaster/cli image page is the place to check available tags; its tag list changes over time.
Illustrative GitHub Actions wrapper
The following is an example of placing the documented Docker command in a job, not an official Zonemaster workflow. Check your provider’s current Docker and networking requirements before using it. This example assumes the runner has a usable Docker CLI:
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- 5-in-1 USB-C Hub: Experience comprehensive connectivity featuring a Power Delivery input, two USB-A 2.0 ports, a USB-A 3.0 port, and an HDMI port. (Note: The USB-C power delivery input port is only for connecting an external wall charger to power your laptop and cannot power peripheral devices.)
- 90W Pass-Through Charging: Achieve optimal charging with 90W pass-through power to your laptop, supported by a total input of 100W, with the hub reserving 10W for operational efficiency. (Note: Wall charger not included.)
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- What You Get: Anker USB-C Hub (5-in-1, 4K HDMI), welcome guide, 18-month warranty, and our friendly customer service.
name: DNS checks
on: [push, pull_request]
jobs:
zonemaster:
runs-on: ubuntu-latest
steps:
- name: Run Zonemaster
run: docker run -t --rm zonemaster/cli example.com --no-ipv6Replace the sample zone and adjust IPv6 handling to match the test coverage you need. GitHub Actions is shown only as an illustration; providers can restrict Docker-in-Docker, privileged execution, or container networking differently.
Smoke-check a local installation
After installing the CLI, use the documented basic test against a sample domain, then check that the manual page is available:
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- Flawless 4K@60Hz Video with HDMI: Delivers exceptional clarity and smoothness with its 4K@60Hz HDMI port, making it ideal for high-definition presentations and entertainment. (Note: Only the HDMI port supports video projection; the USB-C port is for data transfer only.)
- Double Up on Efficiency: The two USB-A 3.0 ports and a USB-C port support a fast 5Gbps data rate, significantly boosting your transfer speeds and improving productivity.
- Fast and Reliable 85W Charging: Offers high-capacity, speedy charging for laptops up to 85W, so you spend less time tethered to an outlet and more time being productive.
- What You Get: Anker USB-C Hub (7-in-1), welcome guide, 18-month warranty, and our friendly customer service.
zonemaster-cli --test basic zonemaster.net
man zonemaster-cliThe first command should print delegation test results. In the pipeline, substitute the domain you intend to validate. The --test basic option runs a named test case rather than the default full test, so use it as a smoke check, not as equivalent coverage.
Configure IPv6 and test scope
Decide whether to use --no-ipv6
The CLI guide advises using --no-ipv6 when the host or network has no IPv6 connectivity. Docker does not support IPv6 unless it is enabled in the Docker daemon. Hosted runner capabilities vary, so decide whether the job is meant to test IPv6 reachability before disabling it. If IPv6 is in scope, make sure the runner and container network can reach it rather than silently skipping those checks.
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- Next-Level 10Gbps & 3A Charging: No more slow 480Mbps, this usb to usb c adapter has a transfer speed of up to 10Gbps, allowing you to do more transferring in less time. This usb adapter fits both USB A and USB C charger, supporting up to 3A fast charging
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- Broad Compatible: The usb c to usb adapter widely supports all USB C/ USB A devices like laptops, tablets, cellphones, car chargers, and phone chargers. Such as compatible with MacBook Pro/Air 2023/2022, Thunderbolt 4/3 Devices,Apple MagSafe Watch 9/8/7/SE/Ultra, iPad Pro 2022/2021, Samsung Galaxy S23/S20/S10, and iPhone 17/16/15 Pro. Plug and play
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Choose the amount of testing
The --test option selects a named test case, and --list_tests lists available tests. Targeting a case may shorten a job, but narrows coverage compared with the default full test. Keep that distinction explicit in the workflow and its documentation.
Read and preserve the output
Results stream as test cases run. By default, the CLI prints plain text at NOTICE severity and higher. Use --level=INFO to include INFO-level messages, --raw for raw output, or the documented JSON output when a downstream process needs structured data. Keep the output in the CI log or save it using the provider’s normal artifact mechanism.
Best Value
- 5-in-1 Connectivity: Equipped with a 4K HDMI port, a 5 Gbps USB-C data port, two 5 Gbps USB-A ports, and a USB C 100W PD-IN port. Note: The USB C 100W PD-IN port supports only charging and does not support data transfer devices such as headphones or speakers.
- Powerful Pass-Through Charging: Supports up to 85W pass-through charging so you can power up your laptop while you use the hub. Note: Pass-through charging requires a charger (not included). Note: To achieve full power for iPad, we recommend using a 45W wall charger.
- Transfer Files in Seconds: Move files to and from your laptop at speeds of up to 5 Gbps via the USB-C and USB-A data ports. Note: The USB C 5Gbps Data port does not support video output.
- HD Display: Connect to the HDMI port to stream or mirror content to an external monitor in resolutions of up to 4K@30Hz. Note: The USB-C ports do not support video output.
- What You Get: Anker 332 USB-C Hub (5-in-1), welcome guide, our worry-free 18-month warranty, and friendly customer service.
Do not assume a particular warning or error automatically maps to a failed job. The installation and quick-start documentation does not establish a universal CI pass/fail contract for DNS findings. Before making results a release gate, check the help or manual for the CLI version you selected and define the exact status or output conditions your pipeline should enforce.
Use proposed DNS records for pre-deployment checks
If parent nameserver, glue, or DS records are planned but not yet published, the CLI supports supplying proposed values with repeated --ns and --ds options. Use these only when the intended records are known, and follow the current CLI documentation for the exact argument syntax. This can help check a planned change before deployment; it does not replace checking the published delegation after the change.
Manage image versions and runner differences
Version tags are time-sensitive. At the time reflected by the available release information, Docker Hub listed v8.0.2 as a recent tag, and the official Zonemaster-CLI release page associated v8.0.2 with Zonemaster v2026.1 and v2026.1.1. Confirm current tags and release notes when setting up or updating a pipeline. Docker Hub says the official image is updated at least twice a year, so a floating current tag should not be treated as a fixed version.
The official Zonemaster Docker documentation says its components can be used on Linux, macOS, and Windows, but that does not guarantee every CI provider permits the same Docker setup. The CLI guide also notes that its example image may produce an architecture warning on Apple M1 and shows --platform linux/amd64 as a workaround; that platform-specific note is not a general CI requirement.
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Quick Recap
Before making the job a release gate
- Confirm the selected runner can use Docker, if the job uses the image.
- Decide whether IPv6 is part of the check; enable working connectivity or explicitly use
--no-ipv6. - Choose full or targeted test coverage and document any reduction.
- Select a deliberate image version if repeatability matters.
- Choose a readable or machine-readable output format that your team can inspect.
- Verify the selected CLI version’s exit and status behavior before mapping findings to CI success or failure.
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