Kubernetes-setup.md

@@ -37,15 +37,33 @@ You can give as much information as possible to the team for creation:
 
 First you need to build your image during the CI in gitlab. For this, I recommand to write a script that do this process and call it in the `.gitlab-ci.yml`:
 
-#### Build script:
+* **Build script**:
 ```bash
 #!/bin/sh
 echo "$CI_REGISTRY_PASSWORD" | docker login -u "$CI_REGISTRY_USER" --password-stdin $CI_REGISTRY
-
-# Build backend
 docker build -t "$CI_REGISTRY_IMAGE/backend:${CI_COMMIT_REF_NAME}" backend/
 docker tag "$CI_REGISTRY_IMAGE/backend:${CI_COMMIT_REF_NAME}" "$CI_REGISTRY_IMAGE/backend:latest"
 docker push "$CI_REGISTRY_IMAGE/backend:${CI_COMMIT_REF_NAME}"
 ```
 
-> You do not have to set `CI_REGISTRY_PASSWORD` and `$CI_REGISTRY_USER` variables in gitlab.
+> You do not have to set `CI_REGISTRY_PASSWORD` and `$CI_REGISTRY_USER` variables in gitlab.
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+
+* **`.gitlab-ci.yml`**:
+
+Add these lines or adapt to your existing `.gitlab-ci.yml`.
+
+```yaml
+services:
+  - docker:18-dind
+
+stages:
+  - build
+
+build-backend:
+  image: docker:latest
+  stage: build
+  script:
+    - sh path/to/your/script.sh
+  tags:
+    - k8s
+```
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