title: Docker WORKDIR - on my machine or the container?
body: <p>What context does the <code>WORKDIR</code> keyword in a Dockerfile refer to? Is it in the context I run <code>docker build</code> from or inside the container I am producing?</p>
  
  <p>I find myself often putting <code>RUN cd &amp;&amp; ...</code> in my docker files and am hoping there's another way, I feel like I'm missing something.</p>