diagnostics.py

import json
from testcontainers.core import utils
from testcontainers.core.container import DockerContainer


result = {
    'is_linux': utils.is_linux(),
    'is_mac': utils.is_mac(),
    'is_windows': utils.is_windows(),
    'inside_container': utils.inside_container(),
    'default_gateway_ip': utils.default_gateway_ip(),
}

with DockerContainer('alpine:latest') as container:
    client = container.get_docker_client()
    result.update({
        'container_host_ip': container.get_container_host_ip(),
        'docker_client_gateway_ip': client.gateway_ip(container._container.id),
        'docker_client_bridge_ip': client.bridge_ip(container._container.id),
        'docker_client_host': client.host(),
    })

print(json.dumps(result, indent=2))