chore(ci): split docker-build from gitlab-ci

Keep CI on each folder of each component

Signed-off-by: Klagarge <remi@heredero.ch>

.gitlab-ci.yml

@@ -1,25 +1,2 @@
-variables:
-  DOCKER_IMAGE: registry.forge.hefr.ch/team-raclette/project-softweng/gateway:latest
-
-default:
-  image: $DOCKER_IMAGE
-
-stages:
-  - build-docker
-
-# This job runs only when Dockerfile changes
-docker-build:
-  image: docker:latest
-  stage: build-docker
-  services:
-    - docker:dind
-  script:
-    - docker build -t $DOCKER_IMAGE -f gateway/Dockerfile .
-    - echo $CI_REGISTRY_PASSWORD | docker login -u $CI_REGISTRY_USER --password-stdin $CI_REGISTRY
-    - docker push $DOCKER_IMAGE
-  rules:
-    - if: $GITLAB_CI == 'false' # Only run in GitLab CI
-      when: never
-    - changes:
-        - gateway/Dockerfile
-        - gateway/src/*
+include:
+  - local: gateway/.gitlab-ci.yml