ci: deploy systemd man to GitHub Pages

rhel-only

Related: RHEL-32494

Co-authored-by: Frantisek Sumsal <[email protected]>

.github/workflows/deploy-man-pages.yml

@@ -0,0 +1,60 @@
+name: Deploy systemd man to Pages
+
+on:
+  push:
+    branches: [ rhel-8.10.0 ]
+    paths:
+      - man/*
+      - .github/workflows/deploy-man-pages.yml
+  schedule:
+    # Run every Monday at 4:00 AM UTC
+    - cron: 0 4 * * 1
+  workflow_dispatch:
+
+permissions:
+  contents: read
+
+# 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: pages
+  cancel-in-progress: false
+
+jobs:
+  # Single deploy job since we're just deploying
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+
+    permissions:
+      pages: write
+      id-token: write
+
+    steps:
+      - uses: actions/checkout@v4
+
+      - name: Install dependencies
+        run: |
+          RELEASE="$(lsb_release -cs)"
+          sudo add-apt-repository -y --no-update --enable-source
+          sudo apt-get -y update
+          sudo apt-get -y build-dep systemd
+
+      - name: Build HTML man pages
+        run: |
+          meson setup build
+          ninja -C build man/html
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: ./build/man
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4