feat(os): support Alpine Linux 3.16 (#1479)

Dockerfile

@@ -10,7 +10,7 @@ ENV REPOSITORY github.com/future-architect/vuls
 COPY . $GOPATH/src/$REPOSITORY
 RUN cd $GOPATH/src/$REPOSITORY && make install
 
-FROM alpine:3.15
+FROM alpine:3.16
 
 ENV LOGDIR /var/log/vuls
 ENV WORKDIR /vuls

config/os.go

@@ -257,6 +257,7 @@ func GetEOL(family, release string) (eol EOL, found bool) {
 			"3.13": {StandardSupportUntil: time.Date(2022, 11, 1, 23, 59, 59, 0, time.UTC)},
 			"3.14": {StandardSupportUntil: time.Date(2023, 5, 1, 23, 59, 59, 0, time.UTC)},
 			"3.15": {StandardSupportUntil: time.Date(2023, 11, 1, 23, 59, 59, 0, time.UTC)},
+			"3.16": {StandardSupportUntil: time.Date(2024, 5, 23, 23, 59, 59, 0, time.UTC)},
 		}[majorDotMinor(release)]
 	case constant.FreeBSD:
 		// https://www.freebsd.org/security/

config/os_test.go

@@ -406,8 +406,16 @@ func TestEOL_IsStandardSupportEnded(t *testing.T) {
 			found:    true,
 		},
 		{
-			name:     "Alpine 3.16 not found",
+			name:     "Alpine 3.16 supported",
 			fields:   fields{family: Alpine, release: "3.16"},
+			now:      time.Date(2024, 5, 23, 23, 59, 59, 0, time.UTC),
+			stdEnded: false,
+			extEnded: false,
+			found:    true,
+		},
+		{
+			name:     "Alpine 3.17 not found",
+			fields:   fields{family: Alpine, release: "3.17"},
 			now:      time.Date(2022, 1, 14, 23, 59, 59, 0, time.UTC),
 			stdEnded: false,
 			extEnded: false,