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fix(ci): extract first image tag by line, not space

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metadata-action emits tags newline-separated, so FIRST_TAG=${TAGS%% *}
kept the entire multi-line value and expanded to 4 args on tag releases,
making `imagetools inspect` fail before the manifest could be signed.
Split on the first line instead.
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ThePhaseless
2026-08-09 19:25:09 +02:00
parent 0c44ce1a4d
commit 1c9093f218
1 changed files with 4 additions and 3 deletions
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.github/workflows/docker-publish.yml
+4 -3
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@@ -216,9 +216,10 @@ jobs:
# All tags created above alias a single manifest list; capture its digest
# so the signature is bound to the image bytes, not a mutable tag.
# Tags from metadata-action are full references (image:tag).
FIRST_TAG=${TAGS%% *}
DIGEST=$(docker buildx imagetools inspect --format '{{.Manifest.Digest}}' ${FIRST_TAG})
# Tags from metadata-action are full references (image:tag), one per line,
# so take the first line rather than splitting on spaces.
FIRST_TAG=$(printf '%s' "$TAGS" | head -n1)
DIGEST=$(docker buildx imagetools inspect --format '{{.Manifest.Digest}}' "$FIRST_TAG")
echo "DIGEST=$DIGEST" >> $GITHUB_OUTPUT
# Sign the manifest list by digest — every consumer tag aliases this digest