From 15338af94909e6ae9231029e0d719ae8fd038ee8 Mon Sep 17 00:00:00 2001
From: Ming Di Leom <2809763-curben@users.noreply.gitlab.com>
Date: Thu, 13 Jan 2022 06:06:43 +0000
Subject: [PATCH] fix: use GNU grep instead of busybox

---
 src/script.sh | 14 ++++++++++++++
 1 file changed, 14 insertions(+)

diff --git a/src/script.sh b/src/script.sh
index f99c4f5..3a9d75a 100644
--- a/src/script.sh
+++ b/src/script.sh
@@ -4,6 +4,20 @@
 
 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
+
+
 mkdir -p "tmp/"
 cd "tmp/"