Startup.cs

app.UseEndpoints(endpoints =>
{
    endpoints.MapControllers();
    endpoints.MapGet("/", async context =>
    {
        context.Response.ContentType = "text/plain";

        // Host info
        var name = Dns.GetHostName(); // get container id
        var ip = Dns.GetHostEntry(name).AddressList.FirstOrDefault(x => x.AddressFamily == AddressFamily.InterNetwork);
        Console.WriteLine($"Host Name: { Environment.MachineName} \t {name}\t {ip}");
        await context.Response.WriteAsync($"Host Name: {Environment.MachineName}{Environment.NewLine}");
        await context.Response.WriteAsync(Environment.NewLine);

        // Request method, scheme, and path
        await context.Response.WriteAsync($"Request Method: {context.Request.Method}{Environment.NewLine}");
        await context.Response.WriteAsync($"Request Scheme: {context.Request.Scheme}{Environment.NewLine}");
        await context.Response.WriteAsync($"Request URL: {context.Request.GetDisplayUrl()}{Environment.NewLine}");
        await context.Response.WriteAsync($"Request Path: {context.Request.Path}{Environment.NewLine}");

        // Headers
        await context.Response.WriteAsync($"Request Headers:{Environment.NewLine}");
        foreach (var (key, value) in context.Request.Headers)
        {
            await context.Response.WriteAsync($"\t {key}: {value}{Environment.NewLine}");
        }
        await context.Response.WriteAsync(Environment.NewLine);

        // Connection: RemoteIp
        await context.Response.WriteAsync($"Request Remote IP: {context.Connection.RemoteIpAddress}");
    });
});