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add description to manifest spec

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This PR add some description to manifest spec.
It clarifies the relationship between `fsLayers` and `history` fields.

Signed-off-by: xiekeyang <xiekeyang@huawei.com>
This commit is contained in:
xiekeyang 2015-09-19 17:44:23 +08:00
parent f8109a78f9
commit da8ef7585d
1 changed files with 6 additions and 2 deletions
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8
docs/spec/manifest-v2-1.md
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@ -55,18 +55,22 @@ Manifest provides the base accessible fields for working with V2 image format
- **`history`** *array* - **`history`** *array*
history is a list of unstructured historical data for v1 compatibility. history is a list of unstructured historical data for v1 compatibility. It
contains ID of the image layer and ID of the layer's parent layers.
history is a struct consisting of the following fields history is a struct consisting of the following fields
- **`v1Compatibility`** string - **`v1Compatibility`** string
V1Compatibility is the raw V1 compatibility information. This will V1Compatibility is the raw V1 compatibility information. This will
contain the JSON object describing the V1 of this image. contain the JSON object describing the V1 of this image.
- **`schemaVersion`** *int* - **`schemaVersion`** *int*
SchemaVersion is the image manifest schema that this image follows. SchemaVersion is the image manifest schema that this image follows.
>**Note**:the length of `history` must be equal to the length of `fsLayers` and
>entries in each are correlated by index.
## Signed Manifests ## Signed Manifests
Signed manifests provides an envelope for a signed image manifest. A signed Signed manifests provides an envelope for a signed image manifest. A signed