added sync scripts for my mirrors

bin/alpine.sh

@@ -0,0 +1,28 @@
+#!/usr/bin/env sh
+
+# make sure we never run 2 rsync at the same time
+lockfile="/tmp/alpine-mirror.lock"
+if [ -z "$flock" ] ; then
+  exec env flock=1 flock -n $lockfile "$0" "$@"
+fi
+
+src=rsync://rsync.alpinelinux.org/alpine/ 
+dest=/data/alpine/
+
+# uncomment this to exclude old v2.x branches
+exclude="--exclude v2.* --exclude v3.0 --exclude v3.1 --exclude v3.2 --exclude v3.2 --exclude v3.3 --exclude v3.4 --exclude v3.5 --exclude v3.6 --exclude v3.7 --exclude aarch64/ --exclude armhf/ --exclude armv7/ --exclude ppc64le/ --exclude s390x/ --exclude x86/"
+
+mkdir -p "$dest"
+/usr/bin/rsync \
+        --archive \
+        --update \
+        --hard-links \
+        --delete \
+        --delete-after \
+        --delay-updates \
+        --timeout=600 \
+        --delete-excluded \
+        --verbose \
+        $exclude \
+        "$src" "$dest"
+