Switch to branch-less GitHub pages workflow

.github/workflows/main.yml

@@ -1,43 +1,42 @@
 name: Build
+
 on:
   push:
     branches:
       - main
+
 jobs:
   deploy:
     name: Build and deploy the site
     runs-on: ubuntu-latest
+    permissions:
+      contents: read
+      pages: write
+      id-token: write
+
     steps:
-    - name: Check out the repository
-      env:
-        REPOSITORY: ${{ github.repository }}
-      run: |
-        ls -la
-        git clone "https://github.com/$REPOSITORY" .
-    - name: Download Zola
-      run: |
-        version='v0.18.0'
-        archive="zola-${version}-x86_64-unknown-linux-gnu.tar.gz"
-        curl -L "https://github.com/getzola/zola/releases/download/${version}/${archive}" -o "$archive"
-        tar xf "$archive"
-    - name: Build the site
-      run: |
-        ./zola build
-    - name: Deploy the site
-      working-directory: ./public
-      env:
-        DEPLOY_SECRET_KEY: ${{ secrets.DEPLOY_SECRET_KEY }}
-      run: |
-        mkdir ~/.ssh
-        echo "$DEPLOY_SECRET_KEY" > ~/.ssh/id_ed25519
-        chmod 600 ~/.ssh/id_ed25519
+      - name: Check out the repository
+        env:
+          REPOSITORY: ${{ github.repository }}
+        run: |
+          ls -la
+          git clone "https://github.com/$REPOSITORY" .
+
+      - name: Download Zola
+        run: |
+          version='v0.18.0'
+          archive="zola-${version}-x86_64-unknown-linux-gnu.tar.gz"
+          curl -L "https://github.com/getzola/zola/releases/download/${version}/${archive}" -o "$archive"
+          tar xf "$archive"
+
+      - name: Build the site
+        run: |
+          ./zola build
 
-        echo 'Host *' >> ~/.ssh/config
-        echo '    StrictHostKeyChecking=no' >> ~/.ssh/config
+      - name: Upload pages artifact
+        uses: actions/upload-pages-artifact@v1
+        with:
+          path: public
 
-        git config --global user.email "[email protected]"
-        git config --global user.name "CI"
-        git init -b built
-        git add -A
-        git commit -m "Add files generated by zola"
-        git push -f [email protected]:ruma/ruma.dev built
+      - name: Deploy to GitHub Pages
+        uses: actions/deploy-pages@v2