docker dial tcp 127.0.0.1:50001: connect: connection refused

This error message indicates that the Docker container is unable to establish a connection with the specified IP address and port number.

There could be several reasons for this error, such as:

1. The service running on the specified port is not available, or it's not running on the host machine.
2. The firewall or network settings are blocking the connection.
3. The Docker container is not configured to connect to the correct host and port.

To resolve this issue, you can try the following solutions:

1. Check if the service running on the specified port is up and running on the host machine.
2. Ensure that the firewall or network settings allow the connection to the specified port.
3. Check the Docker container configuration to ensure that it's configured to connect to the correct host and port.

You can also try running the Docker container with the `--network=host` option to allow it to use the host networking stack, which may resolve the issue.