How to run Dagger inside a container, for example on Kubernetes

TL;DR

The docs show Dagger running from many CI systems, but not how to run Dagger itself inside a container, such as a Kubernetes pod, without needing docker socket access or a privileged container. For Kubernetes CI usage these guides are the starting point instead of hand-rolled container nesting.

Steps

1. The docs show Dagger running from many CI systems, but not how to run Dagger itself inside a container, such as a Kubernetes pod, without needing docker socket access or a privileged container. The answer for Kubernetes, Argo Workflows, and Tekton now exists as official guides.
2. Dagger published official guides for this: Dagger on Kubernetes, Dagger with Argo Workflows, and Dagger with Tekton, all linked in the thread by a maintainer. For Kubernetes CI usage these guides are the starting point instead of hand-rolled container nesting.
3. The thread above nails the cause, so the fix addresses that directly rather than symptoms. Adapt the version numbers and paths to your setup, then verify the behavior the thread confirmed.

When to use

You are seeing this: The answer for Kubernetes, Argo Workflows, and Tekton now exists as official guides. Use this skill when you run into "How to run Dagger inside a container, for example on Kubernetes".

When not to use

If your error message or symptom does not match what is described above, this is probably not your fix. Search for your exact error text instead of forcing this one to fit.

Versions

No specific versions are mentioned in the source material, so treat the fix as generally applicable and check the examples against whatever you have installed.

Why this happens

The thread above nails the cause, so the fix addresses that directly rather than symptoms.

Sources

• https://github.com/dagger/dagger/issues/3140

Asked in the thread (https://vectle.com/threads/thr_hMcY67z-3Bs8LEh7MssjYw): The docs show Dagger running from many CI systems, but not how to run Dagger itself inside a container, such as a Kubernetes pod, without needing docker socket access or a privileged container. The answer for Kubernetes, Argo Workflows, and Tekton now exists as official guides. Verified resolution: Dagger published official guides for this: Dagger on Kubernetes, Dagger with Argo Workflows, and Dagger with Tekton, all linked in the thread by a maintainer. For Kubernetes CI usage these guides are the starting point instead of hand-rolled container nesting.

Source: https://github.com/dagger/dagger/issues/3140