Policy CLI fails to push an image to ECR

[carabasdaniel]

Using Policy CLI version 2.4 to push an image returns:

oras push manifest failed: unexpected status from PUT request to <ecr-url>/manifests/latest: 405 Method Not Allowed
failed to push one or more policies: oras push manifest failed: unexpected status from PUT request to <ecr-url>/manifests/latest: 405 Method Not Allowed

Using Policy CLI version 2.1 works as intended.

[carabasdaniel]

Investigation results:

• When bumping dependencies in policy CLI v0.2.4 with the latest changes the packing mechanism for the image manifest switched to the latest oras.PackManifestVersion1_1_RC4.

• Pushing images that are built with this packing mechanism instead of the older default oras.PackManifestVersion1_0 causes AWS ECR to throw the above 405 Method Not Allowed error when pushing the manifest blob with the details:

{\"errors\":[{\"code\":\"UNSUPPORTED\",\"message\":\"Invalid parameter at 'ImageManifest' failed to satisfy constraint: 'Invalid JSON syntax'\"}]}\n"