Änderungen von P. Rösner .gitlab-ci.yml

.gitlab-ci.yml

 docker-build:
   # Use the official docker image.
-  image: docker:cli
+  image: docker:stable
   stage: build
   services:
-    - docker:dind
+    - name: 'docker:dind'
+      alias: mydocker
+      command: ['--tls=false']
   variables:
     DOCKER_IMAGE_NAME: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
+    DOCKER_HOST: tcp://mydocker:2375/
+    DOCKER_TLS_CERTDIR: ""
   before_script:
     - docker login -u "$CI_REGISTRY_USER" -p "$CI_REGISTRY_PASSWORD" $CI_REGISTRY
   # All branches are tagged with $DOCKER_IMAGE_NAME (defaults to commit ref slug)