title: How to COPY files of current directory to folder in Dockerfile
body: <p>I'm trying to create a Dockerfile that copies all the files in the currently directory to a specific folder.</p>
  
  <p>Currently I have</p>
  
  <pre><code>COPY . /this/folder
  </code></pre>
  
  <p>I'm unable to check the results of this command, as my container closes nearly immediately after I run it. Is there a better way to test if the command is working?</p>