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

Dockerfile

@@ -22,8 +22,4 @@ USER nodejs
 
 EXPOSE 3000
 
-# Health check
-HEALTHCHECK --interval=30s --timeout=3s --start-period=5s --retries=3 \
-  CMD node -e "require('http').get('http://localhost:3000/', (r) => {process.exit(r.statusCode === 200 ? 0 : 1)})"
-
 CMD ["node", "server.js"]