Add TCP support for Model Runner

[ajeetraina]

TCP Support for Model Runner

This PR adds TCP support for connecting to the Model Runner, allowing the application to connect to the model runner via host.docker.internal:12434 instead of using model-runner.docker.internal.

Changes

1. Updated backend.env to use the TCP connection to the model runner at host.docker.internal:12434
2. Modified compose.yaml to add the necessary extra_hosts configuration

Testing

• Updated environment variables to use host.docker.internal:12434
• Added extra_hosts configuration to Docker Compose
• Tested connection to Model Runner via TCP

Benefits of TCP Support

Using TCP support instead of Docker socket communication provides several benefits:

1. Improved Security: Reduces the need for direct Docker socket access
2. Enhanced Flexibility: Allows the application to connect to the Model Runner from hosts that don't have direct Docker access
3. Network Simplicity: Uses standard TCP/IP networking, which is more universally supported
4. Cross-Host Compatibility: Enables the application to connect to Model Runners running on different hosts