[Actions] Pivoting hard to setup-ruby approach

.forgejo/workflows/publish.yaml

@@ -1,20 +1,12 @@
 on: [push]
 jobs:
   jekyll:
-    runs-on: docker
-    container:
-      image: jekyll/builder:latest
+    runs-on: ubuntu-latest
     steps:
       - uses: actions/checkout@v3
-      - run: |
-          ls ${{ github.workspace }}
-      - run: |
-          ls $(pwd)
-      - run: |
-          cd ${{ github.workspace }}
-      - name: Update Gems
-        run: bundle update
-      - name: Build Site
-        run: jekyll build
-      - run: |
-          ls ${{ github.workspace }}
+      - uses: https://github.com/ruby/setup-ruby@v1
+            with:
+              ruby-version: '3.3' # Not needed with a .ruby-version file
+              bundler-cache: true # runs 'bundle install' and caches installed gems automatically
+      - run: bundle install
+      - run: jekyll help