FeatureFeb 17, 2026

Docker-in-Docker support added to Containers and Sandboxes

ContainersCloudflare · Developer platform

Sandboxes and Containers now support running Docker for "Docker-in-Docker" setups. This is particularly useful when your end users or agents want to run a full sandboxed development environment.

This allows you to:

Develop containerized applications with your Sandbox
Run isolated test environments for images
Build container images as part of CI/CD workflows
Deploy arbitrary images supplied at runtime within a container

For Sandbox SDK users, see the Docker-in-Docker guide for instructions on combining Docker with the SandboxSDK. For general Containers usage, see the Containers FAQ.

Read the original announcement

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Docker-in-Docker support added to Containers and Sandboxes

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Docker-in-Docker support added to Containers and Sandboxes

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