29 lines
901 B
Markdown
29 lines
901 B
Markdown
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# apptainer overlay
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> Manage EXT3 writable overlay images for Apptainer containers.
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> More information: <https://apptainer.org/docs/user/main/cli/apptainer_overlay.html>.
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- Add a writable overlay to an existing SIF image:
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`apptainer overlay create {{[-s|--size]}} {{size}} {{path/to/image.sif}}`
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- Create a standalone EXT3 writable overlay image:
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`apptainer overlay create {{[-s|--size]}} {{size}} {{path/to/overlay.img}}`
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- Create a sparse overlay image:
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`apptainer overlay create {{[-s|--size]}} {{size}} {{[-S|--sparse]}} {{path/to/overlay.img}}`
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- Create an overlay for use with fakeroot:
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`apptainer overlay create {{[-f|--fakeroot]}} {{[-s|--size]}} {{size}} {{path/to/overlay.img}}`
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- Create an overlay with a specific directory in the layout:
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`apptainer overlay create --create-dir {{path/to/directory}} {{path/to/overlay.img}}`
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- Display help:
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`apptainer overlay {{[-h|--help]}}`
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