From 8956746af3f6aef94439afde8d819c86f5bdfa20 Mon Sep 17 00:00:00 2001
From: Ming Di Leom <2809763-curben@users.noreply.gitlab.com>
Date: Thu, 13 Jan 2022 06:05:16 +0000
Subject: [PATCH] fix: use GNU grep instead of busybox

---
 src/script.sh | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/src/script.sh b/src/script.sh
index 2649fdd..64e6c36 100644
--- a/src/script.sh
+++ b/src/script.sh
@@ -5,6 +5,19 @@
 set -efux -o pipefail
 
 
+## Use GNU grep, busybox grep is too slow
+. "/etc/os-release"
+DISTRO="$ID"
+
+if [ -z "$(grep --help | grep 'GNU')" ]; then
+  if [ "$DISTRO" = "alpine" ]; then
+    echo "Please install GNU grep 'apk add grep'"
+    exit 1
+  fi
+  alias grep="/usr/bin/grep"
+fi
+
+
 ## Create a temporary working folder
 mkdir -p "tmp/"
 cd "tmp/"