fix github actions (again?)

Author: João Miguel Marinho da Cunha

.github/workflows/deploy.yaml

@@ -30,17 +30,37 @@ jobs:
     steps:
       - name: Checkout
         uses: actions/checkout@v3
-      - name: Install deps
-        run: npm ci
-      - name: Build Demo
-        run: npm run build:demo
+      - name: Detect package manager
+        id: detect-package-manager
+        run: |
+          if [ -f "${{ github.workspace }}/yarn.lock" ]; then
+            echo "::set-output name=manager::yarn"
+            echo "::set-output name=command::install"
+            exit 0
+          elif [ -f "${{ github.workspace }}/package.json" ]; then
+            echo "::set-output name=manager::npm"
+            echo "::set-output name=command::ci"
+            exit 0
+          else
+            echo "Unable to determine packager manager"
+            exit 1
+          fi
+      - name: Setup Node
+        uses: actions/setup-node@v3
+        with:
+          node-version: "16"
+          cache: ${{ steps.detect-package-manager.outputs.manager }}
       - name: Setup Pages
         uses: actions/configure-pages@v2
+      - name: Install dependencies
+        run: ${{ steps.detect-package-manager.outputs.manager }} ${{ steps.detect-package-manager.outputs.command }}
+      - name: Build Demo
+        run: npm run build:demo
       - name: Upload artifact
         uses: actions/upload-pages-artifact@v1
         with:
           # Upload entire repository
-          path: 'demo'
+          path: "demo"
       - name: Deploy to GitHub Pages
         id: deployment
         uses: actions/deploy-pages@v1