title: Why is "docker run mcr.microsoft.com/windows/servercore:1809 echo hello" giving me cannot find the file specified?
body: <p>Simply put, running <code>docker run mcr.microsoft.com/windows/servercore:1809 echo hello</code> on a basic windows server core image gives me the following error:</p>
  <pre><code>docker: Error response from daemon: container b4e3e78ec07637c061407e28a24065d723ae20e1ef325c7c71fd3e40e06cdf58 encountered an error during hcsshim::System::CreateProcess: failure in a Windows system call: The system cannot find the file specified. (0x2)
  [Event Detail:  Provider: 00000000-0000-0000-0000-000000000000]
  [Event Detail:  Provider: 00000000-0000-0000-0000-000000000000]
  [Event Detail: onecore\vm\compute\management\orchestration\vmhostedcontainer\processmanagement.cpp(173)\vmcomputeagent.exe!00007FF644139FAB: (caller: 00007FF6440EE19A) Exception(2) tid(394) 80070002 The system cannot find the file specified.
      CallContext:[\Bridge_ProcessMessage\VmHostedContainer_ExecuteProcess]
   Provider: 00000000-0000-0000-0000-000000000000].
  </code></pre>
  <p>What could be causing this issue? If I add &quot;cmd&quot; before the echo hello it doesn't give an error anymore, but I do not see that the command was executed. I only see C:\ being printed.</p>