19 lines
734 B
Bash
19 lines
734 B
Bash
#!/usr/bin/env bash
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set -euo pipefail
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image_ref=${1:?image reference is required}
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error_file=$(mktemp)
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trap 'rm -f "$error_file"' EXIT
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if digest=$(docker buildx imagetools inspect "$image_ref" --format '{{.Manifest.Digest}}' 2>"$error_file"); then
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[[ "$digest" =~ ^sha256:[0-9a-f]{64}$ ]] || { echo "Invalid existing image digest" >&2; exit 1; }
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printf 'found=true\ndigest=%s\n' "$digest" >> "${GITHUB_OUTPUT:?}"
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elif grep -Fxq "ERROR: $image_ref: not found" "$error_file" \
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|| grep -Eqi '^ERROR:.*: (manifest unknown|name unknown)(:.*)?$' "$error_file"; then
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echo 'found=false' >> "${GITHUB_OUTPUT:?}"
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else
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# 鉴权、网络、限流错误不是缓存未命中，必须阻止发布。
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cat "$error_file" >&2
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exit 1
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fi
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