Draft: Gitlab ci image build

sync ci image build to fit the manual builds https://reseed-documentation.rd.ruhr-uni-bochum.de/system/deployment/2_image_building/

.gitlab-ci.yml

@@ -6,6 +6,9 @@ stages:
   - test
   - deploy
 
+cache:
+  key: ${CI_COMMIT_REF_SLUG}
+
 services:
   - docker:dind
   - postgres:13-alpine
@@ -18,16 +21,13 @@ variables:
   POSTGRES_PASSWORD: 'password'
   POSTGRES_HOST_AUTH_METHOD: trust
   RAILS_ENV: test
-  
+
 build-job:
   stage: build
   before_script:
     - apk update && apk upgrade && apk add nodejs curl libarchive-tools build-base libpq-dev sqlite-dev libxml2-dev tzdata
     - cd hyrax && bundle install --jobs 4 --retry 3
-    - cd hyrax &&  sh deploy_info.sh
-    - DOCKER_IMAGE_TAG = "${CI_COMMIT_REF_SLUG}_$(git describe --all --always --long --tags | sed -e 's|^heads/||' -e 's|/|_|g')_$(jq -r '.last_deployed' < hyrax/deploy_info.json | sed 's|\+00:00$|UTC|g;s|:|-|g')"
-    - export $DOCKER_IMAGE_TAG
-    - echo $DOCKER_IMAGE_TAG
+    - cd hyrax && sh deploy_info.sh  && cat ./deploy_info.json
     
   script:
     - mkdir -p /fits/fits-1.5.5