replace node server with caddy and hexo with hugo

.github/PULL_REQUEST_TEMPLATE.md

@@ -4,9 +4,9 @@ Closes #
 
 ### Checklist
 
-*I confirm that before I submitted this pull request I did the following:*
+_I confirm that before I submitted this pull request I did the following:_
 
 - [ ] Confirmed that no other open PRs address this issue.
 - [ ] Checked out the latest version of the site.
-- [ ] Ran `yarn start` and confirmed that there were no issues.
+- [ ] Ran `hugo build` and confirmed that there were no issues.
 - [ ] Annotated my code with the relevant license information (if applicable).

.github/workflows/build-validate.yml

@@ -0,0 +1,40 @@
+name: Build and Validate
+
+on:
+  push:
+    branches: [ master ]
+  pull_request:
+    branches: [ master ]
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Set up Ruby
+        uses: ruby/setup-ruby@v1.39.0
+        with:
+          ruby-version: ruby
+      - name: Setup Hugo
+        uses: peaceiris/actions-hugo@v2
+        with:
+          hugo-version: '0.74.2'
+          extended: true
+      - uses: actions/checkout@v2
+        with:
+          submodules: true  # Fetch Hugo themes (true OR recursive)
+          fetch-depth: 0    # Fetch all history for .GitInfo and .Lastmod
+      - name: Install dependencies
+        run: |
+          gem install html-proofer mdl
+      - name: Run markdownlint (mdl)
+        run: mdl -s .markdown.style.rb content/
+      - name: Build site
+        run: make build
+      - name: Validate site's HTML
+        run: |
+          htmlproofer \
+          --allow-hash-href \
+          --check-html \
+          --empty-alt-ignore \
+          --disable-external \
+          ./public

.gitignore

@@ -8,13 +8,6 @@ pids
 *.pid
 *.seed
 
-# Environment variables
-.env
-
-# email update related
-mailing_list
-email_update_log
-
 # Directory for instrumented libs generated by jscoverage/JSCover
 lib-cov
 
@@ -49,3 +42,13 @@ db.json
 _bower_components
 banner-*
 thumb-*
+
+### Hugo ###
+# Generated files by hugo
+/public/
+/resources/_gen/
+
+# Executable may be added to repository
+hugo.exe
+hugo.darwin
+hugo.linux

.sass-lint.yaml

@@ -0,0 +1,24 @@
+---
+options:
+  max-warnings: 100
+files:
+  include: 'assets/**/*.s+(a|c)ss'
+rules:
+  leading-zero: 0
+  no-url-domains: 0
+  no-url-protocols: 0
+  function-name-format:
+    - 2
+    - allow-leading-underscore: false
+      convention: camelcase
+  mixin-name-format:
+    - 2
+    - allow-leading-underscore: false
+      convention: camelcase
+  placeholder-name-format:
+    - 2
+    - allow-leading-underscore: false
+      convention: camelcase
+  nesting-depth:
+    - 2
+    - max-depth: 3