Fix deployment issues

- Remove healthcheck from Dockerfile (Coolify handles this)
- Make database connection non-blocking
- Add Coolify-specific docker-compose file
- Improve error handling for database connection

docker-compose.coolify.yml

@@ -0,0 +1,39 @@
+version: '3.8'
+
+services:
+  postgres:
+    image: postgres:15-alpine
+    restart: unless-stopped
+    environment:
+      POSTGRES_DB: recruitment
+      POSTGRES_USER: postgres
+      POSTGRES_PASSWORD: ${DB_PASSWORD:-changeme123}
+    volumes:
+      - postgres_data:/var/lib/postgresql/data
+      - ./migrations:/docker-entrypoint-initdb.d:ro
+    healthcheck:
+      test: ["CMD-SHELL", "pg_isready -U postgres"]
+      interval: 10s
+      timeout: 5s
+      retries: 5
+
+  app:
+    build: .
+    restart: unless-stopped
+    ports:
+      - "3000:3000"
+    environment:
+      NODE_ENV: production
+      PORT: 3000
+      DB_HOST: postgres
+      DB_PORT: 5432
+      DB_NAME: recruitment
+      DB_USER: postgres
+      DB_PASSWORD: ${DB_PASSWORD:-changeme123}
+      SESSION_SECRET: ${SESSION_SECRET:-change-this-secret-in-production}
+    depends_on:
+      postgres:
+        condition: service_healthy
+
+volumes:
+  postgres_data: