Switch to Eleventy and rebuild site

.editorconfig

@@ -5,7 +5,7 @@ root = true
 [*]
 charset = utf-8
 end_of_line = lf
-indent_size = 2
+indent_size = 4
 indent_style = space
 insert_final_newline = true
 trim_trailing_whitespace = true

.github/dependabot.yml

@@ -0,0 +1,7 @@
+version: 2
+updates:
+    - package-ecosystem: "github-actions"
+      directory: "/"
+      schedule:
+          # Check for updates to GitHub Actions every week
+          interval: "weekly"

.github/workflows/gh-pages.yml

@@ -0,0 +1,63 @@
+name: GitHub Pages
+
+on:
+    push:
+        branches:
+            - main
+    pull_request:
+    workflow_dispatch:
+
+jobs:
+    build:
+        name: Build website
+        runs-on: ubuntu-latest
+
+        concurrency:
+            group: ${{ github.workflow }}-${{ github.ref }}-build
+
+        steps:
+            - uses: actions/checkout@v4
+
+            - name: Setup Node
+              uses: actions/setup-node@v4
+              with:
+                  cache: "npm"
+                  node-version: "lts/*"
+
+            - name: Cache Eleventy .cache
+              uses: actions/cache@v4
+              with:
+                  path: ./.cache
+                  key: ${{ runner.os }}-eleventy-fetch-cache
+
+            - run: npm ci
+            - run: npm run build
+
+            - name: Upload artifact
+              uses: actions/upload-pages-artifact@v3
+              if: github.ref == 'refs/heads/main'
+              with:
+                  path: ./_site
+
+    deploy:
+        if: github.ref == 'refs/heads/main'
+
+        name: Deploy website to GitHub Pages
+        needs: build
+        runs-on: ubuntu-latest
+
+        concurrency:
+            group: ${{ github.workflow }}-${{ github.ref }}-deploy
+
+        permissions:
+            contents: write
+            id-token: write
+
+        environment:
+            name: github-pages
+            url: ${{ steps.deployment.outputs.page_url }}
+
+        steps:
+            - name: Deploy to GitHub Pages
+              uses: actions/deploy-pages@v4
+              id: deployment

.gitignore

@@ -1,13 +1,3 @@
-# Created by https://www.toptal.com/developers/gitignore/api/jekyll
-# Edit at https://www.toptal.com/developers/gitignore?templates=jekyll
-
-### Jekyll ###
 _site/
-.sass-cache/
-.jekyll-cache/
-.jekyll-metadata
-# Ignore folders generated by Bundler
-.bundle/
-vendor/
-
-# End of https://www.toptal.com/developers/gitignore/api/jekyll
+node_modules/
+.cache