Move to container versions being the name of the branch

.gitlab-ci.yml

@@ -8,8 +8,8 @@ stages:
 variables:
   DOCKER_DRIVER: overlay2
   CONTAINER_IMAGE: lab.compute.dtu.dk:5005/$CI_PROJECT_PATH
-  CONTAINER_TEST_IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
-  CONTAINER_RELEASE_IMAGE: $CI_REGISTRY_IMAGE:latest
+  CONTAINER_TEST_IMAGE: $CI_REGISTRY_IMAGE:CI_COMMIT_SHORT_SHA
+  CONTAINER_RELEASE_IMAGE: $CI_REGISTRY_IMAGE:$CI_COMMIT_REF_SLUG
   GIT_SUBMODULE_STRATEGY: recursive
 
 before_script: