docker shell shenanigans

Program.cs

using System;
using System.Diagnostics;

namespace ConsoleApplication
{
    public class Program
    {
        public static void Main(string[] args)
        {
            var startInfo = new ProcessStartInfo {
                FileName = "powershell.exe",
                Arguments = "-Command - ",
                UseShellExecute = false,
                RedirectStandardOutput = true,
                RedirectStandardError = true,
                RedirectStandardInput = true,
            };

            var process = new Process {
                StartInfo = startInfo,
            };

            process.OutputDataReceived += (s, e) => Console.WriteLine(e.Data);
            process.ErrorDataReceived += (s, e) => Console.WriteLine(e.Data);
            process.Start();
            process.BeginOutputReadLine();
            process.BeginErrorReadLine();

            var cmd = Environment.CommandLine.Substring(7);
            var inp = process.StandardInput;
            inp.WriteLine(cmd);
            inp.Close();

            process.WaitForExit();
        }
    }
}