Merge branch 'fixing_ci' into 'dev'

fix gitlab ci by setting docker versions

See merge request bmp-caosdb/caosdb-pyinttest!12

.gitlab-ci.yml

@@ -58,7 +58,7 @@ variables:
    DOCKER_DRIVER: overlay2
 
 services:
-  - docker:dind
+  - docker:18.09.7-dind
 
 stages: 
   - setup
@@ -66,7 +66,7 @@ stages:
   - test
 
 test:
-  tags: [docker]
+  tags: [notls]
   stage: test
   image: 
     name: docker/compose:1.24.1
@@ -87,8 +87,8 @@ test:
       - exit $rc
 
 build-testenv:
-  tags: [docker]
-  image: docker:latest
+  tags: [notls]
+  image: docker:18.09
   stage: setup
   script: 
       - docker login -u testuser -p $CI_REGISTRY_PASSWORD $CI_REGISTRY
@@ -102,7 +102,7 @@ build-testenv:
       - docker push $CI_REGISTRY_IMAGE:latest
 
 style:
-  tags: [docker]
+  tags: [notls]
   stage: style
   image: $CI_REGISTRY_IMAGE:latest
   script: