services keyword does not merge with other.

.gitlab-ci.yml

@@ -5,9 +5,6 @@ variables:
     DOCKER_PASS: SECURE
     DOCKER_DRIVER: overlay2
 
-services:
-    - docker:dind
-
 before_script:
     - FRACTALIS_VERSION=$(grep version setup.py | grep -o "[0-9]\.[0-9]\.[0-9]")
     - DOCKER_IMAGE_TAG="fractalis:$FRACTALIS_VERSION"
@@ -25,12 +22,15 @@ build:sdist:
   script:
       - python3 setup.py sdist
   artifacts:
+      expire_in: 1h
       paths:
           - dist/
 
 build:image:
   stage: build_image
   image: docker:latest
+  services:
+      - docker:dind
   tags:
       - privileged
   script:
@@ -39,6 +39,7 @@ build:image:
   dependencies:
       - build:sdist
   artifacts:
+      expire_in: 1h
       paths:
           - image.tar
 
@@ -50,6 +51,7 @@ test:
     services:
         - redis:3.2-alpine
         - rabbitmq:3.7-alpine
+        - docker:dind
     script:
         - docker load -i image.tar
         - >
@@ -76,6 +78,8 @@ release:pypi:
 release:docker:
     stage: release
     image: docker:latest
+    services:
+        - docker:dind
     tags:
         - privileged
     script: