new build arg requires version.sh

Signed-off-by: Felix Bartels <felix@host-consultants.de>

version.sh

@@ -0,0 +1,16 @@
+#!/bin/bash
+if ! hash jq; then
+	echo "Please install jq in order to run this build script."
+	exit 1
+fi
+
+source base/create-kopano-repo.sh
+
+component=${1:-core}
+
+# query community server by h5ai API
+filename=$(h5ai_query "$component")
+
+currentVersion=$(version_from_filename "$filename")
+
+echo $currentVersion