add workflow to deploy changes

Author: pietroalbini

.github/workflows/deploy.yml

@@ -0,0 +1,24 @@
+---
+
+name: Deploy
+on:
+  workflow_dispatch: {}
+
+jobs:
+  prod:
+    name: Production
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v3
+
+      - name: Build the Docker image
+        run: docker build -t docs-rs-web -f dockerfiles/Dockerfile --target web-server .
+
+      - name: Upload the Docker image to ECR
+        uses: rust-lang/simpleinfra/github-actions/upload-docker-image@master
+        with:
+          image: docs-rs-web
+          repository: docs-rs-web
+          region: us-west-1
+          aws_access_key_id: "${{ secrets.aws_access_key_id }}"
+          aws_secret_access_key: "${{ secrets.aws_secret_access_key }}"