diff -urN a/apk/apt-dater-host b/apk/apt-dater-host
--- a/apk/apt-dater-host	2017-09-19 17:29:23.873543499 +0200
+++ b/apk/apt-dater-host	2017-09-19 17:29:53.406954004 +0200
@@ -168,7 +168,7 @@
 	shift
 
 	proxy="/etc/profile.d/proxy.sh"
-	[ -r $proxy ] && source $proxy
+	[ -r $proxy ] && . $proxy
 
 	cmd="$ROOT_CMD $*"
 	$cmd