create Github workflow

.github/workflows/main.yml

@@ -0,0 +1,40 @@
+name: Test and Deploy to Heroku
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  build-and-test:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Check out repository
+      - uses: actions/checkout@v3
+
+      - name: Set up Python
+        uses: actions/setup-python@v3
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Run tests
+        run: make test
+
+      - name: Log in to Heroku Container Registry
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+        run: heroku container:login
+
+      - name: Build the Docker image
+        run: make build
+
+      - name: Push Docker image to Heroku
+        env:
+          HEROKU_API_KEY: ${{ secrets.HEROKU_API_KEY }}
+        run: make heroku
+