Validation fail since no space in VM

https://github.com/Azure/ai-app-templates/actions/runs/18835179254/job/53734459090

Error: Command failed: docker buildx build --load --build-arg BUILDKIT_INLINE_CACHE=1 -f /tmp/devcontainercli-runner/container-features/0.80.1-1761584033297/Dockerfile-with-features -t undefined:latest --target dev_containers_target_stage --build-context dev_containers_feature_content_source=/tmp/devcontainercli-runner/container-features/0.80.1-1761584033297 --build-arg _DEV_CONTAINERS_BASE_IMAGE=dev_container_auto_added_stage_label --build-arg _DEV_CONTAINERS_IMAGE_USER=root --build-arg _DEV_CONTAINERS_FEATURE_CONTENT_SOURCE=dev_container_feature_content_temp /home/runner/work/_temp/template/.devcontainer
at F6 (/usr/local/lib/node_modules/@devcontainers/cli/dist/spec-node/devContainersSpecCLI.js:468:1988)
at process.processTicksAndRejections (node:internal/process/task_queues:95:5)
at async pw (/usr/local/lib/node_modules/@devcontainers/cli/dist/spec-node/devContainersSpecCLI.js:467:1886)
at async k7 (/usr/local/lib/node_modules/@devcontainers/cli/dist/spec-node/devContainersSpecCLI.js:667:2203)
at async R7 (/usr/local/lib/node_modules/@devcontainers/cli/dist/spec-node/devContainersSpecCLI.js:666:4937)
at async /usr/local/lib/node_modules/@devcontainers/cli/dist/spec-node/devContainersSpecCLI.js:484:1188

Error: Dev container build failed: Command failed: docker buildx build --load --build-arg BUILDKIT_INLINE_CACHE=1 -f /tmp/devcontainercli-runner/container-features/0.80.1-1761584033297/Dockerfile-with-features -t undefined:latest --target dev_containers_target_stage --build-context dev_containers_feature_content_source=/tmp/devcontainercli-runner/container-features/0.80.1-1761584033297 --build-arg _DEV_CONTAINERS_BASE_IMAGE=dev_container_auto_added_stage_label --build-arg _DEV_CONTAINERS_IMAGE_USER=root --build-arg _DEV_CONTAINERS_FEATURE_CONTENT_SOURCE=dev_container_feature_content_temp /home/runner/work/_temp/template/.devcontainer (exit code: undefined)
An error occurred building the image.
Error: Command failed: docker buildx build --load --build-arg BUILDKIT_INLINE_CACHE=1 -f /tmp/devcontainercli-runner/container-features/0.80.1-1761584033297/Dockerfile-with-features -t undefined:latest --target dev_containers_target_stage --build-context dev_containers_feature_content_source=/tmp/devcontainercli-runner/container-features/0.80.1-1761584033297 --build-arg _DEV_CONTAINERS_BASE_IMAGE=dev_container_auto_added_stage_label --build-arg _DEV_CONTAINERS_IMAGE_USER=root --build-arg _DEV_CONTAINERS_FEATURE_CONTENT_SOURCE=dev_container_feature_content_temp /home/runner/work/_temp/template/.devcontainer

Start with the linked GitHub Actions run and the failing docker buildx command, then inspect the template's .devcontainer context used by validation. Reproduce the failure in the VM environment and identify why the dev container build fails; done means the validation action completes successfully for the template.