Add build stage

.gitlab-ci.yml

@@ -1,12 +1,29 @@
-docker-build:
-  image: docker:latest
-  stage: build
-  services:
-    - docker:dind
+stages:
+  - prep
+  - build
+
+fetch-versions:
+  image: busybox:latest
+  stage: prep
   script:
     - apk add git curl jq
     - git clone https://gitlab.com/gitlab-org/omnibus-gitlab /tmp/gitlab
     - cd /tmp/gitlab
     - "HALIA_VER=$(curl --request GET -L --header 'Accept: application/json' --header 'Content-Type: application/json' https://git.halia.dev/api/v4/projects/24/registry/repositories/6/tags | jq -r '.[].location' | grep -v latest | cut -d ':' -f2 | sort -V | tail -1)"
     - "GITLAB_VER=$(git tag | sort -V | grep ce | tail -1 | cut -d '+' -f1)"
-    - echo 'Version' $HALIA_VER $GITLAB_VER
+    - if [ $HALIA_VER != GITLAB_VER ]; then echo "1" >> /tmp/update; fi
+  artifacts:
+    paths:
+      - /tmp/update
+    expire_in: 1 hour
+
+build-image:
+  image: docker:latest
+  stage: build
+  services:
+    - docker:dind
+  script:
+    - docker --version
+    - cat /tmp/update
+  dependencies:
+    - fetch-versions