SEONGHYUN HONG 9f89960cf2 fix: match image digests with any algorithm, not only sha256 (#6167) ...

* fix: match image digests with any algorithm, not only sha256

IsImageMatched hard-coded '@sha256:' in its regex, while Split accepts any
digest algorithm. An image pinned with a non-sha256 digest (e.g.
nginx@sha512:...) was not matched, so the ImageTagTransformer silently left
it unchanged and the user's images: override was ignored. Generalize the
digest algorithm in the regex to match what Split accepts.

Signed-off-by: Seonghyun Hong <s3onghyun.hong@gmail.com>

* Address review: match OCI digest grammar and test spec example algorithms

Broaden the digest-algorithm match to the OCI grammar (algorithm components
separated by +._-), so multihash+base58 and other registered/unregistered
algorithms match, not just [a-zA-Z][a-zA-Z0-9]*. Add test cases using the
descriptor example algorithms: a full-length sha512 digest and
multihash+base58.

Signed-off-by: Seonghyun Hong <s3onghyun.hong@gmail.com>

---------

Signed-off-by: Seonghyun Hong <s3onghyun.hong@gmail.com>

2026-06-20 15:25:40 +05:30

..

image_test.go

fix: match image digests with any algorithm, not only sha256 (#6167)

2026-06-20 15:25:40 +05:30

image.go

fix: match image digests with any algorithm, not only sha256 (#6167)

2026-06-20 15:25:40 +05:30