Migrate to preCICE Algolia account, update index in a workflow (#408)

* Migrate to preCICE Algolia account
* Add manual workflow to update the Algolia index
* Add cron schedule

.github/workflows/update-algolia.yml

@@ -0,0 +1,25 @@
+name: Update the Algolia search index
+on:
+  workflow_dispatch:
+  schedule:
+    - cron: "0 16 * * Sun"
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+        with:
+          submodules: true
+          lfs: false
+          path: website
+      - uses: ruby/setup-ruby@v1
+        with:
+          bundler-cache: true
+          working-directory: website
+      - name: Build website and update Algolia index
+        working-directory: website
+        env:
+          JEKYLL_ENV: production
+        run: ALGOLIA_API_KEY=${{ secrets.ALGOLIA_API_KEY }} bundle exec jekyll algolia

_config.yml

@@ -242,9 +242,9 @@ url: https://precice.org
 github: [metadata]
 
 algolia:
-  application_id: I5M4FAJYBH
+  application_id: LIT6P0EW26
   index_name:     jekyll
-  search_only_api_key: d6f8d2f113bc342ee3f42421d0153bad
+  search_only_api_key: 760ed6be3e165d08b4a798ac4aa82fe4
   nodes_to_index: 'p,code,table' # html tags to include in search index
 
 plugins: