From 12d3aa0a61419a7370a88f1017c72b2ffe5ef360 Mon Sep 17 00:00:00 2001
From: nrbffs <git-ffs@nicoboehr.de>
Date: Fri, 16 Aug 2019 20:23:51 +0200
Subject: [PATCH] gitlab ci: docker: switch to overlay2 driver

see <https://blog.sparksuite.com/7-ways-to-speed-up-gitlab-ci-cd-times-29f60aab69f9>
---
 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index fc37df79c..0d2ed88a9 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -2,6 +2,7 @@ image: registry.gitlab.freifunk-stuttgart.de/firmware/ffs-buildenv:master
 
 variables:
   GIT_SUBMODULE_STRATEGY: normal
+  DOCKER_DRIVER: overlay2
 
 stages:
   - build
-- 
GitLab