add github actions

.github/workflows/main.yml

@@ -0,0 +1,23 @@
+name: Deploy to AWS S3
+on:
+    push:
+        branches:
+            - main
+
+jobs:
+    deploy:
+        runs-on: ubuntu-latest
+
+        steps:
+            - name: Checkout
+              uses: actions/checkout@v1
+
+            - name: Configure AWS Credentials
+              uses: aws-actions/configure-aws-credentials@v1
+              with:
+                  aws-access-key-id: ${{ secrets.AWS_ACCESS_KEY_ID }}
+                  aws-secret-access-key: ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+                  aws-region: eu-west-2
+
+            - name: Deploy static site to S3 bucket
+              run: aws s3 sync . s3://dexter-cli-bucket --delete