From 79814b9cbb512822edc9ffca1e32dc2f20547135 Mon Sep 17 00:00:00 2001
From: Andrew Kroh <andrew.kroh@elastic.co>
Date: Wed, 24 Jan 2024 16:09:36 -0500
Subject: [PATCH] Replace slices.Contains usage with helper func

The 8.12 branch is not yet on Go 1.21 so the slices package isn't available.
---
 dev-tools/packaging/package_test.go | 12 ++++++++++--
 1 file changed, 10 insertions(+), 2 deletions(-)

diff --git a/dev-tools/packaging/package_test.go b/dev-tools/packaging/package_test.go
index e01b6c566e5a..8c51d5cf4055 100644
--- a/dev-tools/packaging/package_test.go
+++ b/dev-tools/packaging/package_test.go
@@ -33,7 +33,6 @@ import (
 	"os"
 	"path/filepath"
 	"regexp"
-	"slices"
 	"strings"
 	"testing"
 
@@ -752,7 +751,7 @@ func readDocker(dockerFile string) (*packageFile, *dockerInfo, error) {
 			if err != nil {
 				return nil, nil, err
 			}
-		case slices.Contains(manifest.Layers, header.Name):
+		case sliceContains(manifest.Layers, header.Name):
 			layer, err := readTarContents(header.Name, tarReader)
 			if err != nil {
 				return nil, nil, err
@@ -885,3 +884,12 @@ func readDockerInfo(r io.Reader) (*dockerInfo, error) {
 
 	return &info, nil
 }
+
+func sliceContains(s []string, e string) bool {
+	for _, v := range s {
+		if e == v {
+			return true
+		}
+	}
+	return false
+}