add deploy.sh and docker-compose

deploy.sh

@@ -0,0 +1,17 @@
+#!/bin/bash
+set -e
+
+cd /home/dilanka/my_website
+
+echo "==> Pulling latest code..."
+git pull origin main
+
+echo "==> Rebuilding Docker image..."
+docker compose down
+docker compose build --no-cache
+docker compose up -d
+
+echo "==> Cleanup..."
+docker system prune -f
+
+echo "✅ Deploy complete!"