Add binary classifier for the ERLang interpretter (#2417)

Signed-off-by: Laurent Goderre <laurent.goderre@docker.com>

syft/pkg/cataloger/binary/cataloger_test.go

@@ -715,6 +715,18 @@ func Test_Cataloger_DefaultClassifiers_PositiveCases(t *testing.T) {
 				Metadata:  metadata("consul-binary"),
 			},
 		},
+		{
+			name:       "positive-erlang-25.3.2.7",
+			fixtureDir: "test-fixtures/classifiers/positive/erlang-25.3.2.7",
+			expected: pkg.Package{
+				Name:      "erlang",
+				Version:   "25.3.2.7",
+				Type:      "binary",
+				PURL:      "pkg:generic/erlang@25.3.2.7",
+				Locations: locations("erlexec"),
+				Metadata:  metadata("erlang-binary"),
+			},
+		},
 		{
 			name:       "positive-nginx-1.25.1",
 			fixtureDir: "test-fixtures/classifiers/positive/nginx-1.25.1",

syft/pkg/cataloger/binary/default_classifiers.go

@@ -283,6 +283,17 @@ var defaultClassifiers = []classifier{
 		PURL:    mustPURL("pkg:generic/ruby@version"),
 		CPEs:    singleCPE("cpe:2.3:a:ruby-lang:ruby:*:*:*:*:*:*:*:*"),
 	},
+	{
+		Class:    "erlang-binary",
+		FileGlob: "**/erlexec",
+		EvidenceMatcher: fileContentsVersionMatcher(
+			// <artificial>[NUL]/usr/local/src/otp-25.3.2.7/erts/
+			`(?m)\<artificial\>\x00/usr/local/src/otp-(?P<version>[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+?)/erts/`,
+		),
+		Package: "erlang",
+		PURL:    mustPURL("pkg:generic/erlang@version"),
+		CPEs:    singleCPE("cpe:2.3:a:erlang:erlang\\/otp:*:*:*:*:*:*:*:*"),
+	},
 	{
 		Class:    "consul-binary",
 		FileGlob: "**/consul",