Merge pull request #31 from Ultimaker/EXP_parallel_ci

Removed custom prepare_environment step in CI, in preperation for par…

.gitlab-ci.yml

@@ -3,21 +3,6 @@ include:
     ref: master
     file: /gitlab_ci_templates/jedi-gitlab-ci-template.yml
 
-# Prepare stage, prepares a Docker image based on the Docker file in /docker_env subfolder of the repository.
-# To have early feedback when setting up your Docker image, make sure you implement a buildenv_check.sh script,
-# see the exeample in this repository.
-# ==================================================================================
-
-prepare_environment:
-  extends:
-    - .jobs_common
-    - .environment_common
-  stage: prepare
-  variables:
-    GIT_STRATEGY: clone
-  script:
-    - ./make_docker.sh "${BUILD_PIPELINE_IMAGE}"
-
 complexity:
   extends:
     - .jobs_common