add a prod deployment workflow

.github/workflows/deploy-prod.yml

@@ -0,0 +1,41 @@
+name: Production deployment
+
+on: 
+  push:
+    branches:
+      - master
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+      - name: npm install and build webpack
+        run: |
+          npm install
+          npm run build
+      - uses: actions/upload-artifact@master
+        with:
+          name: webpack artifacts
+          path: public/
+
+  deploy:
+    name: Deploy Node.js app to AWS
+    needs: build
+    runs-on: ubuntu-latest
+
+    steps:
+      - uses: actions/checkout@v1
+
+      - name: Download built artifact
+        uses: actions/download-artifact@master
+        with:
+          name: webpack artifacts
+          path: public
+
+      - name: Deploy to AWS
+        uses: docker://admiralawkbar/aws-nodejs:latest
+        env:
+          AWS_ACCESS_KEY: ${{ secrets.AWS_ACCESS_KEY }}
+          AWS_SECRET_KEY: ${{ secrets.AWS_SECRET_KEY }}