Enable DOCKER_BUILDKIT=1 variable for CI

diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index f86461a8c0131abfdbcb3f762ca5c947d2e0ce65..c944134ccb880e15e3b8c6557db325cebe849905 100644 (file)
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -8,6 +8,8 @@ stages:
 
 .dind: &dind
   image: docker:latest
+  variables:
+    DOCKER_BUILDKIT: "1"
   services:
     - docker:dind
   before_script: