ci: refactor

.gitlab-ci.yml

 
 stages:
-  - build
   - publish
 
-build_gem:
-  image: ruby
-  stage: build
-  script:
-    - gem build decidim-theme.gemspec
-  artifacts:
-    paths:
-      - decidim-theme-*.gem
-  only:
-    - tags
-
 publish_gem:
   image: ruby
   stage: publish
   script:
-    - mkdir ~/.gem
-    - echo "---" > ~/.gem/credentials
+    - echo "---" > .credentials
     - |
-      echo ":rubygems_api_key: '${RUBYGEMS_API_KEY}'" >> ~/.gem/credentials
-    - chmod 0600 ~/.gem/credentials
-    - gem push decidim-theme-*.gem
-  dependencies:
-    - build_gem
+      echo ":ci_rubygems_api_key: $GEM_HOST_API_KEY" >> .credentials
+    - chmod 0600 .credentials
+    - gem build decidim-theme.gemspec
+    - gem push decidim-theme-*.gem -k ci_rubygems_api_key --config-file .credentials
   only:
     - tags