minimalist version for the gitlab-ci

.gitignore

@@ -2,6 +2,3 @@
 _site
 # ignore jekyll cache
 .jekyll-cache
-# ignore local Gemfile
-Gemfile
-Gemfile.lock

.gitlab-ci.yml

@@ -2,212 +2,19 @@ image: ruby:3.0
 
 stages:
   - build
-  - test
-  - review
-  - accessibility
-  - deploy
 
-.artifacts_extension:
-  artifacts:
-    paths:
-      - public
-    expire_in: 1d
-
-.caching: &caching
-  cache:
-    - key:
-        files:
-          - Gemfile.lock
-        prefix: "$CI_JOB_IMAGE"
-      paths:
-        - vendor/bundle
-    - key: jumbotron-cache-$CI_COMMIT_REF_SLUG
-      paths:
-        - assets/img/jumbotrons/desktop
-        - assets/img/jumbotrons/display_2k
-        - assets/img/jumbotrons/phone
-        - assets/img/jumbotrons/tablet
-
-.common_production: &production_before_script
-  before_script:
-   ## Following four lines are not needed.
-   #- "[[ -x \"$(command -v apt-get)\" ]] && \
-   #      apt-get update && \
-   #      apt-get install -y ffmpeg"
-   #- ./fetch_external_content.sh
-    - gem install bundler --no-document
-    - bundle config set without 'test'
-    - bundle install --jobs $(nproc)
-  <<: *caching
-
-.common_latest: &latest_before_script
-  before_script:
-   ## Following four lines are not needed.
-   #- "[[ -x \"$(command -v apt-get)\" ]] && \
-   #      apt-get update && \
-   #      apt-get install -y ffmpeg"
-   #- ./fetch_external_content.sh
-    - "[[ -f \"Gemfile.lock\" ]] && rm Gemfile.lock"
-    - bundle config set without 'test'
-    - bundle install --jobs $(nproc) --without test "${FLAGS[@]}"
-    - bundle update --jobs $(nproc) "${FLAGS[@]}"
-  <<: *caching
-
-.common_variables: &common_variables
-  GIT_SUBMODULE_STRATEGY: recursive
-  SUBPATH: "/"
-  BUNDLE_PATH: vendor/bundle
-  NOKOGIRI_USE_SYSTEM_LIBRARIES: "1"
+variables:
+  JEKYLL_ENV: production
+  
+before_script:
+  - gem install bundler jekyll --no-document
 
-.builds: &builds
+build:
   stage: build
-  variables:
-    <<: *common_variables
   script:
-   ## REVISIT: skip generating thumbnails for now.
-   #- "bash scripts/create_jumbotrons.sh assets/img/jumbotrons/"
-    - "bundle exec jekyll build --future \
-        --config _config.yml \
-        -d public$SUBPATH \
-        --baseurl $SUBPATH"
-    - "cp _favicons/* public/$SUBPATH"
-  # https://docs.gitlab.com/ce/ci/yaml/#interruptible
-  interruptible: true
-
-.builds_reviewapps: &builds_reviewapps
-  stage: build
-  variables:
-    <<: *common_variables
-  script:
-   ## REVISIT: skip generating thumbnails for now.
-   #- "bash scripts/create_jumbotrons.sh assets/img/jumbotrons/"
-    - "bundle exec jekyll build --future \
-        --config _config.yml,_config_reviewapps.yml \
-        -d public$SUBPATH \
-        --baseurl $SUBPATH"
-    - "cp _favicons/* public/$SUBPATH"
-  # https://docs.gitlab.com/ce/ci/yaml/#interruptible
-  interruptible: true
-
-.tests: &tests
-  stage: test
-  variables:
-    <<: *common_variables
-  before_script:
-    # Installing, generating and exporting locale because htmlproofer needs it.
-    # Locale is not set in "standard" docker containers.
-    - "[[ -x \"$(command -v apt-get)\" ]] && \
-      apt-get update && \
-      apt-get install -y locales && \
-      echo \"en_US UTF-8\" > /etc/locale.gen && \
-      locale-gen en_US.UTF-8 && \
-      export LANG=en_US.UTF-8 && \
-      export LANGUAGE=en_US:en && \
-      export LC_ALL=en_US.UTF-8"
-    - gem install bundler --no-document
-    - bundle install --jobs $(nproc)
-  script:
-    - "bundle exec htmlproofer public \
-        --disable-external=true \
-        --enforce-https=false"
-    # Use yaml-lint tool to check yaml files.
-    - "bundle exec yaml-lint _data/ _config.yml"
-  <<: *caching
-  # https://docs.gitlab.com/ce/ci/yaml/#interruptible
-  interruptible: true
-
-# Job runs jekyll build with latest dependencies.
-build:latest:
-  <<: *builds
-  <<: *latest_before_script
-  image: ruby:latest
-  allow_failure: true
-
-# Job runs jekyll build with production dependencies,
-# puts everything in a sub-directory as required for review apps.
-build:production:review-apps:
-  <<: *builds_reviewapps
-  <<: *production_before_script
-  variables:
-    <<: *common_variables
-    SUBPATH: /review-apps/$CI_PROJECT_PATH_SLUG/$CI_COMMIT_REF_SLUG
-  extends:
-    - .artifacts_extension
-
-# Job runs jekyll build with current production dependencies
-build:production:
-  <<: *builds
-  <<: *production_before_script
-  extends:
-    - .artifacts_extension
-
-# Job runs htmlproofer basing on production build.
-test:htmlproofer:
-  <<: *tests
-  dependencies:
-    - build:production
-  needs: ["build:production"]
-
-# Job runs htmlproofer basing on production build with subpath.
-test:htmlproofer:subpath:
-  <<: *tests
-  dependencies:
-    - build:production:review-apps
-  needs: ["build:production:review-apps"]
-
-# Job tests external links in addition to test:htmlproofer job.
-test:htmlproofer:external_links:
-  <<: *tests
-  dependencies:
-    - build:production
-  needs: ["build:production"]
-  script:
-    - >
-        bundle exec htmlproofer public
-        --disable-external=false
-        --enforce-https=false
-        --ignore-urls='/www.openstoragenetwork.org/,/www.hzdr.de/,/indico4.twgrid.org/,/webfts.fedcloud-tf.fedcloud.eu/,/nubes.helmholtz-berlin.de\/f/'
-        --ignore-status-codes=429
-        --check-external-hash=false
-        --typhoeus='{"headers":{"User-Agent":"Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:105.0) Gecko/20100101 Firefox/105.0"}}'
-        --only-4xx
-  rules:
-    - if: '$CI_PIPELINE_SOURCE == "schedule"'
-  allow_failure: true
-
-review:
-  stage: review
-  variables:
-    GIT_STRATEGY: none
-    REVIEW_APPS_PATH: review-apps/$CI_PROJECT_PATH_SLUG/$CI_COMMIT_REF_SLUG
-  dependencies:
-    - build:production:review-apps
-  needs: ["build:production:review-apps"]
-  script:
-    - mkdir -p /var/www/html/gl-review-apps/$REVIEW_APPS_PATH
-    - rsync -a --delete ./public/$REVIEW_APPS_PATH/. /var/www/html/gl-review-apps/$REVIEW_APPS_PATH/.
-  environment:
-    name: review/$CI_COMMIT_REF_NAME
-    url: https://$APPS_DOMAIN/review-apps/$CI_PROJECT_PATH_SLUG/$CI_COMMIT_REF_SLUG
-    on_stop: stop_review
-  tags:
-    - review-apps
-
-stop_review:
-  stage: review
-  variables:
-    GIT_STRATEGY: none
-    REVIEW_APPS_PATH: review-apps/$CI_PROJECT_PATH_SLUG/$CI_COMMIT_REF_SLUG
-  script:
-    - rm -rf public /var/www/html/gl-review-apps/$REVIEW_APPS_PATH
-    - rmdir --ignore-fail-on-non-empty /var/www/html/gl-review-apps/review-apps/$CI_PROJECT_PATH_SLUG/
-  dependencies: []
-  when: manual
-  environment:
-    name: review/$CI_COMMIT_REF_NAME
-    action: stop
-  tags:
-    - review-apps
-
-include:
-  - template: 'Workflows/MergeRequest-Pipelines.gitlab-ci.yml'
+    - bundle install
+    - bundle exec jekyll build
+  artifacts:
+    paths:
+      - _site
+    expire_in: 1d

Gemfile

+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+# git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+# gem "rails"
+
+# add jekyll as a dependency
+gem "jekyll"
+
+# add github pages
+# gem "github-pages", group: :jekyll_plugins

Gemfile.lock

+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.1.8)
+    em-websocket (0.5.2)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
+    ffi (1.14.2)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.6.0)
+    i18n (1.8.9)
+      concurrent-ruby (~> 1.0)
+    jekyll (4.2.0)
+      addressable (~> 2.4)
+      colorator (~> 1.0)
+      em-websocket (~> 0.5)
+      i18n (~> 1.0)
+      jekyll-sass-converter (~> 2.0)
+      jekyll-watch (~> 2.0)
+      kramdown (~> 2.3)
+      kramdown-parser-gfm (~> 1.0)
+      liquid (~> 4.0)
+      mercenary (~> 0.4.0)
+      pathutil (~> 0.9)
+      rouge (~> 3.0)
+      safe_yaml (~> 1.0)
+      terminal-table (~> 2.0)
+    jekyll-sass-converter (2.1.0)
+      sassc (> 2.0.1, < 3.0)
+    jekyll-watch (2.2.1)
+      listen (~> 3.0)
+    kramdown (2.3.0)
+      rexml
+    kramdown-parser-gfm (1.1.0)
+      kramdown (~> 2.0)
+    liquid (4.0.3)
+    listen (3.4.1)
+      rb-fsevent (~> 0.10, >= 0.10.3)
+      rb-inotify (~> 0.9, >= 0.9.10)
+    mercenary (0.4.0)
+    pathutil (0.16.2)
+      forwardable-extended (~> 2.6)
+    public_suffix (4.0.6)
+    rb-fsevent (0.10.4)
+    rb-inotify (0.10.1)
+      ffi (~> 1.0)
+    rexml (3.2.4)
+    rouge (3.26.0)
+    safe_yaml (1.0.5)
+    sassc (2.4.0)
+      ffi (~> 1.9)
+    terminal-table (2.0.0)
+      unicode-display_width (~> 1.1, >= 1.1.1)
+    unicode-display_width (1.7.0)
+
+PLATFORMS
+  ruby
+
+DEPENDENCIES
+  jekyll
+
+BUNDLED WITH
+   2.1.4