ImageChecker

This class defines a protocol for checking the existence of container images within a specified repository. It provides an asynchronous interface to verify image availability based on repository name, tag, and target architectures.

Methods

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image_exists()

@classmethod
def image_exists(
    repository: str,
    tag: str,
    arch: Tuple[Architecture, ...] = ("linux/amd64",)
) -> Optional[str]

Checks for the existence of a container image in a remote registry for specific hardware architectures.

Parameters

Name	Type	Description
repository	str	The full name of the image repository to check (e.g., 'library/ubuntu').
tag	str	The specific version or tag of the image to look for.
arch	Tuple[Architecture, ...] = ("linux/amd64",)	A tuple of target CPU architectures to validate against the registry manifest.

Returns

Type	Description
Optional[str]	The digest of the image if found, or None if the image does not exist for the specified repository, tag, and architecture.

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