fixed ci

.gitlab-ci.yml

@@ -37,6 +37,7 @@ docker_publish_production:
   services:
   - docker:dind
   script: |
+    test "${DOCKER_AUTH_CONFIG}" == "" && echo "docker-config does not exists, aborting!" && false
     mkdir -p ~/.docker && echo "$DOCKER_AUTH_CONFIG" >~/.docker/config.json
     version=`expr ${CI_COMMIT_TAG} ':' 'release/\(.\+\)'`
     major_version=`expr ${version} ':' '\([^.]\+\)'`
@@ -82,6 +83,7 @@ docker_publish_staging:
   services:
   - docker:dind
   script: |
+    test "${DOCKER_AUTH_CONFIG}" == "" && echo "docker-config does not exists, aborting!" && false
     mkdir -p ~/.docker && echo "$DOCKER_AUTH_CONFIG" >~/.docker/config.json
     docker load --input=image.tar.gz
     docker tag image ${image_name}:staging