Add heroku deploy

Author: andre-dietrich

.github/workflows/heroku-deploy.yaml

@@ -0,0 +1,33 @@
+name: Deploy to Heroku
+
+on:
+  push:
+    branches:
+      - heroku
+
+jobs:
+  build-and-deploy:
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: Checkout repository
+        uses: actions/checkout@v4
+
+      - name: Login to Heroku Container Registry
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+        run: heroku container:login
+
+      - name: Build and push Docker image
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+          HEROKU_APP_NAME: ${{ secrets.HEROKU_APP_NAME }}
+        run: |
+          docker build -t registry.heroku.com/$HEROKU_APP_NAME/web .
+          docker push registry.heroku.com/$HEROKU_APP_NAME/web
+
+      - name: Release to Heroku
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+          HEROKU_APP_NAME: ${{ secrets.HEROKU_APP_NAME }}
+        run: heroku container:release web -a $HEROKU_APP_NAME