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The magnet sandbox-image command group manages custom sandbox images, letting your sessions run in an environment you control.

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magnet sandbox-image register

Register a custom sandbox image from a docker save tarball. The CLI uploads the tarball and polls until the image is ready or failed. 
docker save my-image:latest -o my-image.tar
magnet sandbox-image register my-image.tar
OptionDescription
--poll-interval <duration>Interval between status polls (e.g. 2s, 3s).
--timeout <duration>Max time to wait for ready/failed (e.g. 15m, 20m).

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Examples

Register a large image with a longer timeout: 
magnet sandbox-image register my-image.tar --timeout 30m --poll-interval 5s