fix: add amazon_linux as alias for Amazon Linux distro#3380
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Amazon Linux CPE uses amazon_linux as the product identifier, but grype only mapped the os-release ID "amzn" to the AmazonLinux type. This caused unknown distro warnings and missed OS vulnerability matching when users supply distro info derived from CPE (e.g. amazon_linux-2). Closes anchore#3229
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Description
Amazon Linux's CPE uses
amazon_linuxas the product identifier (e.g.,cpe:2.3:o:amazon:amazon_linux:2:*:*:*:*:*:*:*), but grype only mapped the/etc/os-releaseIDamznto theAmazonLinuxtype. This caused "unknown distro" warnings and missed OS vulnerability matching when users supply distro info derived from CPE data or PURL?distro=qualifiers usingamazon_linux.Change
Added
"amazon_linux"to thealiasTypesmap ingrype/distro/type.go, resolving it toAmazonLinux(same as"amzn").Also added a test case to verify the alias mapping works via
TypeFromRelease.Examples
amazon_linux-2→ now treated asamzn-2amazon_linux-2023→ now treated asamzn-2023Closes #3229