added action for pull request previews

.github/workflows/pull-request.yml

@@ -0,0 +1,30 @@
+name: 'Netlify Preview Deploy'
+
+on:
+  pull_request:
+    types: ['opened', 'synchronize']
+
+jobs:
+  deploy:
+    name: "Deploy to Netlify"
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1      
+      - uses: jsmrcaga/action-netlify-deploy@master
+        with:          
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE3_ID }}
+          BUILD_DIRECTORY: "dist"
+      - name: Deploy to Netlify
+        uses: nwtgck/actions-netlify@v1.1
+        with:
+          publish-dir: 'dist'
+          github-token: ${{ secrets.GITHUB_TOKEN }}
+          deploy-message: "Deploy from GitHub Actions"
+          enable-pull-request-comment: true
+          enable-commit-comment: false
+          overwrites-pull-request-comment: true
+        env:
+          NETLIFY_AUTH_TOKEN: ${{ secrets.NETLIFY_AUTH_TOKEN }}
+          NETLIFY_SITE_ID: ${{ secrets.NETLIFY_SITE3_ID }}