diff --git a/.github/workflows/build_deploy.yml b/.github/workflows/build_deploy.yml
new file mode 100644
index 0000000..32c6a7f
--- /dev/null
+++ b/.github/workflows/build_deploy.yml
@@ -0,0 +1,62 @@
+name: build_deploy
+
+on:
+  push:
+    branches:
+    - main
+    # - staging
+  pull_request:
+  repository_dispatch:
+  workflow_dispatch:
+
+# Sets permissions of the GITHUB_TOKEN to allow deployment to GitHub Pages
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+# Allow only one concurrent deployment, skipping runs queued between the run in-progress and latest queued.
+# However, do NOT cancel in-progress runs as we want to allow these production deployments to complete.
+concurrency:
+  group: ${{ github.workflow }}-${{ github.ref }}
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup Ruby
+        uses: ruby/setup-ruby@v1
+        with:
+          ruby-version: '3.2'
+          bundler-cache: true
+          cache-version: 0 # Increment this number if you need to re-download cached gems
+      - name: Setup Pages
+        id: pages
+        uses: actions/configure-pages@v3
+
+      - name: Build with Jekyll
+        # Outputs to the './_site' directory by default
+        run: JEKYLL_LOG_LEVEL=debug bundle exec jekyll build --verbose --trace --baseurl "${{ steps.pages.outputs.base_path }}"
+        env:
+          JEKYLL_ENV: production
+
+      - name: Upload artifact
+        # Automatically uploads an artifact from the './_site' directory by default
+        uses: actions/upload-pages-artifact@v2
+
+  # Deployment job
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    if: ${{ github.ref == 'refs/heads/main' }}
+    runs-on: ubuntu-latest
+    needs: build
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v2
diff --git a/.github/workflows/links.yml b/.github/workflows/links.yml
new file mode 100644
index 0000000..f3b0ac6
--- /dev/null
+++ b/.github/workflows/links.yml
@@ -0,0 +1,39 @@
+name: links
+
+on:
+  push:
+    branches:
+    - main
+    - staging
+  pull_request:
+
+jobs:
+  link_checker:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v3
+
+    - uses: ruby/setup-ruby@v1
+      with:
+        ruby-version: '3.1'
+        bundler-cache: true
+
+    - name: Build site
+      env:
+        JEKYLL_ENV: production
+      run: bundle exec jekyll build
+
+    - name: Link Checker
+      uses: lycheeverse/lychee-action@v2
+      with:
+        args: --verbose --no-progress -- _site/**/*.html
+        fail: true
+      env:
+        GITHUB_TOKEN: ${{secrets.GITHUB_TOKEN}}
+
+      # - name: Create Issue From File
+      #   uses: peter-evans/create-issue-from-file@v2
+      #   with:
+      #     title: Link Checker Report
+      #     content-filepath: ./lychee/out.md
+      #     labels: report, automated issue
diff --git a/.gitignore b/.gitignore
index 73616ec..eeedc60 100644
--- a/.gitignore
+++ b/.gitignore
@@ -8,3 +8,4 @@
 js/jquery.min.2.1.js
 js/jquery.min.3.7.js
 /firebase-debug.log
+Gemfile.lock
\ No newline at end of file
diff --git a/Gemfile b/Gemfile
new file mode 100644
index 0000000..50d536c
--- /dev/null
+++ b/Gemfile
@@ -0,0 +1,36 @@
+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", "~> 4.3.4"
+# This is the default theme for new Jekyll sites. You may change this to anything you like.
+gem "minima", "~> 2.5"
+# 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", "~> 0.12"
+  gem "jekyll-asciidoc"
+end
+
+# Windows and JRuby does not include zoneinfo files, so bundle the tzinfo-data gem
+# and associated library.
+platforms :mingw, :x64_mingw, :mswin, :jruby do
+  gem "tzinfo", ">= 1", "< 3"
+  gem "tzinfo-data"
+end
+
+# Performance-booster for watching directories on Windows
+gem "wdm", "~> 0.1", :platforms => [:mingw, :x64_mingw, :mswin]
+
+# Lock `http_parser.rb` gem to `v0.6.x` on JRuby builds since newer versions of the gem
+# do not have a Java counterpart.
+gem "http_parser.rb", "~> 0.6.0", :platforms => [:jruby]
+gem 'jekyll-archives'
+gem "jekyll-sass-converter", "~> 2.0"
\ No newline at end of file
diff --git a/_plugins/jekyll-plantuml.rb b/_plugins/jekyll-plantuml.rb
index 9ec0c06..19a1624 100644
--- a/_plugins/jekyll-plantuml.rb
+++ b/_plugins/jekyll-plantuml.rb
@@ -33,10 +33,10 @@ def initialize(tag_name, markup, tokens)
     def render(context)
       site = context.registers[:site]
       name = Digest::MD5.hexdigest(super)
-      if !File.exists?(File.join(site.dest, "uml/#{name}.svg"))
+      if !File.exist?(File.join(site.dest, "uml/#{name}.svg"))
         uml = File.join(site.source, "uml/#{name}.uml")
         svg = File.join(site.source, "uml/#{name}.svg")
-        if File.exists?(svg)
+        if File.exist?(svg)
           puts "File #{svg} already exists (#{File.size(svg)} bytes)"
         else
           FileUtils.mkdir_p(File.dirname(uml))