From 63a0342a56559dd779f9cc5e2962291647bc1b29 Mon Sep 17 00:00:00 2001
From: Hunter Presnall <hpresnall@gmail.com>
Date: Tue, 14 Jul 2020 16:54:06 -0400
Subject: [PATCH] Use APK cache if available on the host system

---
 alpine-make-vm-image | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/alpine-make-vm-image b/alpine-make-vm-image
index 6596883..d47c197 100755
--- a/alpine-make-vm-image
+++ b/alpine-make-vm-image
@@ -447,6 +447,11 @@ else
 	dump_alpine_keys etc/apk/keys/
 fi
 
+# Use APK cache if available.
+if [ -L /etc/apk/cache ]; then
+	ln -s "$(realpath /etc/apk/cache)" etc/apk/cache
+fi
+
 _apk add --root . --update-cache --initdb alpine-base
 prepare_chroot .
 
@@ -493,6 +498,11 @@ if [ "$PACKAGES" ]; then
 	_apk add --root . $PACKAGES
 fi
 
+#-----------------------------------------------------------------------
+if [ -L /etc/apk/cache ]; then
+	rm etc/apk/cache >/dev/null 2>&1
+fi
+
 #-----------------------------------------------------------------------
 if [ "$SCRIPT" ]; then
 	script_name="${SCRIPT##*/}"