Use dind to build container

.gitlab-ci.yml

@@ -66,6 +66,8 @@ deploy:
 
 container:
   image: docker:stable
+  services:
+    - docker:dind
   stage: deploy
   dependencies:
     - build
@@ -73,6 +75,7 @@ container:
     - master
   variables:
     IMAGE_TAG: $CI_REGISTRY_IMAGE:latest
+    DOCKER_BUILDKIT: 1
   before_script:
     - docker login -u $CI_REGISTRY_USER -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
   script: