Formalize website Ruby dependencies and installation process (#4416)

* Formalize website Ruby dependencies and installation process

* Improve Contributing Guidelines

* Add Gemfile.lock to .gitattributes

* Use 'ruby/setup-ruby' caching strategy

* Add link to documentation of 'bundler-cache'

.gitattributes

@@ -5,6 +5,7 @@
 
 # Don't diff machine generated files
 package-lock.json  -diff
+Gemfile.lock       -diff
 
 # Treat images as binary
 *.ico              binary

.github/workflows/verify.yml

@@ -30,18 +30,8 @@ jobs:
       uses: ruby/setup-ruby@v1
       with:
         ruby-version: 2.7
-    - name: Setup cache for gems
-      uses: actions/cache@v2
-      with:
-        path: vendor/bundle
-        key: ${{ runner.os }}-gems-${{ hashFiles('**/Gemfile.lock') }}
-        restore-keys: |
-          ${{ runner.os }}-gems-
-    - name: Install Jekyll
-      run: |
-        echo -e 'source "https://rubygems.org"\n\ngem "jekyll"' > Gemfile
-        bundle config set path 'vendor/bundle'
-        bundle install --jobs 4 --retry 3
+        # https://github.com/ruby/setup-ruby/blob/master/README.md#caching-bundle-install-automatically
+        bundler-cache: true
     - name: Build website
       run: bundle exec jekyll build
   test:

.gitignore

@@ -1,4 +1,4 @@
-# Created by https://www.gitignore.io/api/sass,macos,jekyll
+# Created by https://www.gitignore.io/api/macos,jekyll
 
 ### Jekyll ###
 _site/
@@ -34,17 +34,16 @@ Network Trash Folder
 Temporary Items
 .apdisk
 
-### Sass ###
-*.css.map
-*.sass.map
-*.scss.map
-
-# End of https://www.gitignore.io/api/sass,macos,jekyll
+# End of https://www.gitignore.io/api/macos,jekyll
 
 
 # NPM dependencies
 node_modules/
 
+### Ruby ###
+/.bundle/
+/vendor/bundle
+
 # Files generated by build script
 icons/*.js
 /index.js

CONTRIBUTING.md

@@ -244,8 +244,10 @@ If you have an affiliation to the brand you contributing that allows you to spea
 ## Building Website Locally
 
 * Make sure you have [Ruby](https://www.ruby-lang.org/en/downloads/) installed.
-* Make sure you have [Jekyll](https://jekyllrb.com/) installed (using `$ gem install jekyll bundler`). At least version 3.5 is required.
-* Build and run the website locally using `$ jekyll serve`.
+* Make sure you have [Bundler](https://bundler.io/) installed (using `$ gem install bundler`).
+* Set your local gems installation location for the simple-icons website using `$ bundle config set path 'vendor/bundle'`.
+* Install dependencies using `$ bundle install`.
+* Build and run the website locally using `$ bundle exec jekyll serve`.
 * Connect to the website in your browser via the "Server address" provided by the output of this command, e.g. `http://localhost:4000/`
 
 ## Testing Package Locally

Gemfile

@@ -0,0 +1,7 @@
+# frozen_string_literal: true
+
+source "https://rubygems.org"
+
+git_source(:github) {|repo_name| "https://github.com/#{repo_name}" }
+
+gem "jekyll", "4.2"

Gemfile.lock

@@ -0,0 +1,68 @@
+GEM
+  remote: https://rubygems.org/
+  specs:
+    addressable (2.7.0)
+      public_suffix (>= 2.0.2, < 5.0)
+    colorator (1.1.0)
+    concurrent-ruby (1.1.7)
+    em-websocket (0.5.2)
+      eventmachine (>= 0.12.9)
+      http_parser.rb (~> 0.6.0)
+    eventmachine (1.2.7)
+    ffi (1.14.1)
+    forwardable-extended (2.6.0)
+    http_parser.rb (0.6.0)
+    i18n (1.8.5)
+      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 (3.3.3)
+      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
+  x86_64-linux
+
+DEPENDENCIES
+  jekyll (= 4.2)
+
+BUNDLED WITH
+   2.2.0