Deploy docs to GitHub pages instead of self-hosted server (#473)

* Deploy docs to GitHub pages instead of self-hosted server

Having the documentation hosted on GitHub is more reliable than using a
custom deployment to a self-managed server.

* downgrade node version

* Update websites package dependencies

* Add permissions

* Only deploy website on main branch

.github/workflows/website.yml

@@ -5,24 +5,39 @@ on:
     paths:
       - ".github/workflows/website.yml"
       - "website/**"
-      - "Dockerfile"
     branches:
       - 2.x
 
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: website
+  cancel-in-progress: true
+
 jobs:
   build:
     runs-on: ubuntu-20.04
     steps:
       - uses: actions/checkout@v3
-      - name: Turnstyle
-        timeout-minutes: 18
-        uses: softprops/turnstyle@v1
-        env:
-          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
-      - name: Dokku Deployment
-        uses: vitalyliber/dokku-github-action@master
-        env:
-          PRIVATE_KEY: ${{ secrets.SSH_PRIVATE_KEY }}
-          PUBLIC_KEY: ${{ secrets.SSH_PUBLIC_KEY }}
-          HOST: ical.poerschke.nrw
-          PROJECT: ical
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v2
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version: 18
+
+      - name: Build Website
+        run: "make docs"
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: 'website/build'
+
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v1

.nvmrc

@@ -1 +1 @@
-14
+17

website/package.json

@@ -14,8 +14,8 @@
         "write-heading-ids": "docusaurus write-heading-ids"
     },
     "dependencies": {
-        "@docusaurus/core": "2.0.0-beta.3",
-        "@docusaurus/preset-classic": "2.0.0-beta.3",
+        "@docusaurus/core": "^2.0.0",
+        "@docusaurus/preset-classic": "^2.0.0",
         "@mdx-js/react": "^1.6.22",
         "clsx": "^1.1.1",
         "docusaurus-plugin-ackee": "^0.0.0",