[ParseRepositoryInfo] parses an image reference and returns information
about the Repository and the registry. As part of this, it validates if
the registry's hostname is considered valid using [ValidateIndexName],
as well as normalizing the image reference to strip tags and digests
using [reference.TrimNamed].
ValidateIndexName only provides very limited value; the only validation
happening is to check for the hostname to not start, or end with a hyphen.
The cli/command/manifest package used ParseRepositoryInfo in various
locations where only the repository name was used (i.e., the result
of `reference.TrimNamed` on the given reference), and in one location
only used it to validate the registry name.
For buildPushRequest, the call was fully redundant, as [RepoNameForReference]
was used on the result, calling [newDefaultRepositoryEndpoint], which
uses ParseRepositoryInfo internally, so we were only repeating that work.
This patch removes uses of ParseRepositoryInfo in those places, and instead
calling [reference.TrimNamed] directly.
[ParseRepositoryInfo]: 41f781fab3/registry/config.go (L375-L381)
[ValidateIndexName]: 41f781fab3/registry/config.go (L288-L299)
[reference.TrimNamed]: 41f781fab3/registry/config.go (L369)
[RepoNameForReference]: fe0a8d2791/cli/registry/client/endpoint.go (L107-L110)
[newDefaultRepositoryEndpoint]: fe0a8d2791/cli/registry/client/endpoint.go (L33-L38)
Signed-off-by: Sebastiaan van Stijn <github@gone.nl>
55a83aff23