Creating Replica of the current server to a new server

I need an experienced system administrator to Create a replica my current Node.js server running on Linux to a new server on Hetzner. The goal is to use a different domain for testing purposes before deploying changes to the primary server.

Key Tasks:
- Transfer the Node.js server with all configurations to a new Linux server on Hetzner
- Ensure the new server operates under a different domain for testing
- Configure the server to mirror the primary server without changes

Ideal Skills:
- Extensive experience with Linux and Node.js
- Proficiency in server cloning and configuration
- Familiarity with Hetzner's cloud service (OS is ubuntu )
- Attention to detail to ensure identical configurations
- knowledge of MangoDB

Please note, the new server doesn't require any changes in configuration for testing purposes. It should be an exact Same configurations but just using differen domain name.

We are doing this so we can do the test on the new server before deploying the update to main server to avoid issues.