diff --git a/bioc-minimal/.gitlab-ci.yml b/bioc-minimal/.gitlab-ci.yml
index 1b8d47b..910df3b 100644
--- a/bioc-minimal/.gitlab-ci.yml
+++ b/bioc-minimal/.gitlab-ci.yml
@@ -1,21 +1,17 @@
-# renku: v1.dev20180723
-
 variables:
   GIT_STRATEGY: fetch
   GIT_SSL_NO_VERIFY: "true"
   GIT_LFS_SKIP_SMUDGE: 1
 
 stages:
   - build
 
 image_build:
   stage: build
   image: docker:stable
   before_script:
     - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN http://$CI_REGISTRY
-  script:
-    - CI_COMMIT_SHA_7=$(echo $CI_COMMIT_SHA | cut -c1-7)
-    - docker build --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7 .
-    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7
-  tags:
-    - image-build
+  script: |
+    CI_COMMIT_SHA_7=$(echo $CI_COMMIT_SHA | cut -c1-7)
+    docker build --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7 .
+    docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7
diff --git a/julia-minimal/.gitlab-ci.yml b/julia-minimal/.gitlab-ci.yml
index 1b8d47b..910df3b 100644
--- a/julia-minimal/.gitlab-ci.yml
+++ b/julia-minimal/.gitlab-ci.yml
@@ -1,21 +1,17 @@
-# renku: v1.dev20180723
-
 variables:
   GIT_STRATEGY: fetch
   GIT_SSL_NO_VERIFY: "true"
   GIT_LFS_SKIP_SMUDGE: 1
 
 stages:
   - build
 
 image_build:
   stage: build
   image: docker:stable
   before_script:
     - docker login -u gitlab-ci-token -p $CI_JOB_TOKEN http://$CI_REGISTRY
-  script:
-    - CI_COMMIT_SHA_7=$(echo $CI_COMMIT_SHA | cut -c1-7)
-    - docker build --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7 .
-    - docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7
-  tags:
-    - image-build
+  script: |
+    CI_COMMIT_SHA_7=$(echo $CI_COMMIT_SHA | cut -c1-7)
+    docker build --tag $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7 .
+    docker push $CI_REGISTRY_IMAGE:$CI_COMMIT_SHA_7