Add GitHub Actions workflow

.github/workflows/Deploy.yml

@@ -0,0 +1,48 @@
+name: Deploy to AWS Lambda
+
+on:
+  push:
+    branches:
+      - main
+
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    environment: Preview
+    steps:
+      - name: Checkout code
+        uses: actions/checkout@v2
+
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.x'
+
+      - name: Install AWS CLI
+        run: |
+          sudo apt-get install -y awscli
+
+      - name: Configure AWS credentials
+        run: |
+          aws configure set aws_access_key_id ${{ secrets.AWS_ACCESS_KEY_ID }}
+          aws configure set aws_secret_access_key ${{ secrets.AWS_SECRET_ACCESS_KEY }}
+          aws configure set region ${{ env.AWS_REGION }}
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install -r requirements.txt
+
+      - name: Package application
+        run: |
+          zip -r deployment_package.zip .
+
+      - name: Deploy to AWS Lambda - Production
+        if: env.ENVIRONMENT == 'Production'
+        run: |
+          aws lambda update-function-code --function-name prod-lta-datasets-updater --zip-file fileb://deployment_package.zip
+
+      - name: Deploy to AWS Lambda - Preview
+        if: env.ENVIRONMENT == 'Preview'
+        run: |
+          aws lambda update-function-code --function-name dev-lta-datasets-updater --zip-file fileb://deployment_package.zip