[extensions-web] ci: disable docker TLS

[Yuri Konotopov <ykonotopov src gnome org>]

commit ec7c122517b6b0fe38f1dc542a3f53348ab5461c
Author: Yuri Konotopov <ykonotopov gnome org>
Date:   Sun Aug 11 11:23:43 2019 +0400

    ci: disable docker TLS
    
    See-Also: https://gitlab.com/gitlab-org/gitlab-runner/issues/4501

 .gitlab-ci.yml | 1 +
 1 file changed, 1 insertion(+)
---
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 6fe82e5..4aaf0ca 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -3,6 +3,7 @@ image: docker:stable
 variables:
   DOCKER_HOST: tcp://docker:2375/
   DOCKER_DRIVER: overlay2
+  DOCKER_TLS_CERTDIR: ""
 
 services:
   - docker:dind