CI WIP

.gitlab-ci.yml

-# Assumes ruby-dev, ruby-bundle, jq and LaTeX are installed in the runner.
-# We do not use the Debian package for Jekyll because Buster has only 3.8.3
-# (while we want at least 3.8.4).
+# Assumes the following is installed in the runner:
+# - jekyll
+# - ruby-jekyll-sitemap, ruby-jekyll-archives, ruby-jekyll-include-cache
+#   (plugins directly used by the site)
+# - ruby-dev (for downloading the minimal-mistakes-jekyll theme, which is not
+#   in Debian)
+# - ruby-jekyll-paginate, ruby-jekyll-feed, ruby-jekyll-gist (dependencies of
+#   the theme)
+# - jq
+# - imagemagick, LaTeX
 
 variables:
   GIT_SUBMODULE_STRATEGY: normal
@@ -15,13 +22,12 @@ build:
     LANGUAGE: en_US.UTF-8
     GEM_HOME: "$CI_PROJECT_DIR/.gem"
   before_script:
-    - gem install jekyll
+    - gem install minimal-mistakes-jekyll
     - (cd _data && wget --no-verbose --no-parent --accept '*.rdf' --recursive --no-directories --execute robots=off https://www.dynare.org/RePEc/cpm/dynare/ && ../assets/RePEc/rdf2yml.sh && rm -f *.rdf)
     - ./setup-download-links.sh
-    - bundle install
   script:
     - (cd assets/images/logo && make)
-    - bundle exec jekyll build
+    - jekyll build
   cache:
     key: ${CI_COMMIT_REF_SLUG}
     paths:

Gemfile

-source "https://rubygems.org"
-
-# Hello! This is where you manage which Jekyll version is used to run.
-# When you want to use a different version, change it below, save the
-# file and run `bundle install`. Run Jekyll with `bundle exec`, like so:
-#
-#     bundle exec jekyll serve
-#
-# This will help ensure the proper Jekyll version is running.
-# Happy Jekylling!
-gem "jekyll", "~> 3.8.4"
-
-# This is the default theme for new Jekyll sites. You may change this to anything you like.
-gem "minimal-mistakes-jekyll"
-
-# If you want to use GitHub Pages, remove the "gem "jekyll"" above and
-# uncomment the line below. To upgrade, run `bundle update github-pages`.
-# gem "github-pages", group: :jekyll_plugins
-
-# If you have any plugins, put them here!
-group :jekyll_plugins do
-  gem "jekyll-feed", "~> 0.6"
-  gem "jekyll-archives"
-  gem "jekyll-sitemap"
-  gem "jekyll-include-cache"
-end
-
-# Windows does not include zoneinfo files, so bundle the tzinfo-data gem
-gem "tzinfo-data", platforms: [:mingw, :mswin, :x64_mingw, :jruby]
-
-# Performance-booster for watching directories on Windows
-gem "wdm", "~> 0.1.0" if Gem.win_platform?
-
-# Pin faraday to 0.17.3, otherwise there's a build error caused by version 4.14 of octokit
-gem 'faraday', '0.17.3'