title: How to run Nginx within a Docker container without halting?
body: <p>I have Nginx installed on a Docker container, and am trying to run it like this:</p>
  
  <pre><code>docker run -i -t -p 80:80 mydockerimage /usr/sbin/nginx
  </code></pre>
  
  <p>The problem is that the way Nginx works, is that the initial process immediately spawns a master Nginx process and some workers, and then quits. Since Docker is only watching the PID of the original command, the container then halts.</p>
  
  <p>How do I prevent the container from halting? I need to be able to tell it to bind to the first child process, or stop Nginx's initial process from exiting.</p>